Emerging Infections

Monkeypox virus infections in children and adolescents in the United States are rare, and young patients with known infections have all recovered, according to a study from the Centers for Disease Control and Prevention.

In addition, evidence suggests that secondary transmission in schools or childcare facilities may be unlikely.

The study was the first comprehensive study on the impact of monkeypox on children during the 2022 outbreak, according to a statement emailed to this news organization from the California Department of Public Health, one of the state health departments that partnered with the CDC to share information.

News of low infection rates and relatively mild disease was welcome to clinicians, who had braced for severe findings on the basis of sparse prior data, according to Peter Chin-Hong, MD, a professor of medicine and an infectious diseases physician at the University of California, San Francisco.

“We were on heightened alert that kids may do poorly,” said Dr. Chin-Hong, who was not involved in the study but who cared for monkeypox patients during the outbreak. “I think this study is reassuring.

“The other silver lining about it is that most of the kids got infected in the household setting from ways that you would expect them to get [infected],” Dr. Chin-Hong said in an interview.

However, Black and Hispanic children were more likely to contract the disease, underscoring troubling inequities.

“Early on, individuals of color were much less likely to be able to successfully access vaccination,” said first author Ian Hennessee, PhD, MPH, an epidemic intelligence service officer with the CDC and a member of the Special Case Investigation Unit of the Multinational Monkeypox Response Team at the CDC. “We think those kinds of structural inequities really trickled down towards the children and adolescents that have been affected by this outbreak.”

The study was published  in Morbidity and Mortality Weekly Report.
 

A nationwide look at the data

The researchers discussed 83 children and adolescents with monkeypox who came to the CDC’s attention between May 17 and Sept. 24, 2022.

The 83 cases represent 0.3% of the 25,038 reported monkeypox cases in the United States over that period. Of the 28 children aged 12 years or younger, 18 (64%) were boys. Sixteen children were younger than 4 years.

Exposure data were available for 20 (71%) of those aged 0-12. In that group, 19 were exposed at home; 17 cases were due to routine skin-to-skin contact with a household caregiver; and one case was suspected to be caused by fomites (such as a shared towel). Exposure information was unavailable for the remaining case.

Most of the children experienced lesions on the trunk. No lesions were anogenital. Two patients in the youngest age group were hospitalized because of widespread rash that involved the eyelids, and a patient in the 5- to 12-year-old group was hospitalized because of periorbital cellulitis and conjunctivitis.

Among those aged 13-17, there were 55 cases. Of these patients, 89% were boys. Exposure data were available for 35 (64%). In 32 of these patients, the infection occurred from presumed sexual contact. Twenty-three of those adolescents reported male-to-male sexual contact. No case was found to be connected with sexual abuse.

Lesions in the adolescents were mostly truncal or anogenital. Six in this group were hospitalized, and all of them recovered. One adolescent was found to be HIV positive.

Black and Hispanic children accounted for 47% and 35% of all cases, respectively.

Eleven percent of all the children and adolescents were hospitalized, and none received intensive care.

Treatments, when given, included the antiviral drug tecovirimat, intravenous vaccinia immune globulin, and topical trifluridine. There were no deaths.

Ten symptomatic patients attended school or daycare. Among these patients, no secondary transmissions were found to have occurred. Some contacts were offered the JYNNEOS monkeypox vaccine as postexposure prophylaxis.

Limitations of the study included potentially overlooked cases. Data were collected through routine surveillance, children frequently experience rashes, and access to testing has been a challenge, Dr. Hennessee explained.

In addition, data on exposure characteristics were missing for some children.
 

Inequities and the risks of being judged

The outbreak in the United States has eased in recent months. However, though uncommon in children, monkeypox has affected some racial groups disproportionately.

“Especially in the later course of the outbreak, the majority of cases were among Black and Hispanic individuals,” said co-author Rachel E. Harold, MD, an infectious diseases specialist and supervisory medical officer with the District of Columbia Department of Health’s HIV/AIDS, Hepatitis, STDs, and TB Administration.

“Unfortunately, the pediatric cases do reflect the outbreak overall,” she told this news organization.

Dr. Harold noted there have been efforts in D.C. and other jurisdictions, as well as by the White House monkeypox response team, to reach populations at greatest risk and that they were “really trying to make vaccine available to people of color.”

Vaccination clinics often popped up in unexpected locations at short notice, and that made it hard for some people to get to them, Dr. Chin-Hong pointed out.

Another factor was “the public aspect of accessing diagnostics and vaccines and the way that that’s linked to potential judgment or sexual risk,” he added.

“Not everybody’s out,” Dr. Chin-Hong said, referring to members of the LGBTQ community. “In many communities of color, going to get a test or going to get a vaccine essentially means that you’re out.”

For clinicians who suspect monkeypox in a child, Dr. Harold suggests keeping a broad differential diagnosis, looking for an epidemiologic link, and contacting the CDC for assistance. Infected children should be encouraged to avoid touching their own eyes or mucous membranes, she added.

In addition, she said, tecovirimat is a reasonable treatment and is well tolerated by pediatric monkeypox patients with eczema, an underlying condition that could lead to severe disease.

For infected caregivers, Dr. Hennessee said, measures to prevent infecting children at home include isolation, contact precautions, and in some cases, postexposure prophylaxis via vaccination.

For sexually active adolescents, he advised that clinicians offer vaccination, education on sexual health, and testing for HIV and other sexually transmitted infections.

“It’s important to remember that adolescents may be sexually active, and clinicians should do a thorough and nonjudgmental sexual history,” Dr. Harold added. “That is always true, but especially if there is concern for [monkeypox].”

Dr. Hennessee, Dr. Chin-Hong, and Dr. Harold have disclosed no relevant financial relationships.

A version of this article first appeared on Medscape.com.

Monkeypox virus infections in children and adolescents in the United States are rare, and young patients with known infections have all recovered, according to a study from the Centers for Disease Control and Prevention.

In addition, evidence suggests that secondary transmission in schools or childcare facilities may be unlikely.

The study was the first comprehensive study on the impact of monkeypox on children during the 2022 outbreak, according to a statement emailed to this news organization from the California Department of Public Health, one of the state health departments that partnered with the CDC to share information.

News of low infection rates and relatively mild disease was welcome to clinicians, who had braced for severe findings on the basis of sparse prior data, according to Peter Chin-Hong, MD, a professor of medicine and an infectious diseases physician at the University of California, San Francisco.

“We were on heightened alert that kids may do poorly,” said Dr. Chin-Hong, who was not involved in the study but who cared for monkeypox patients during the outbreak. “I think this study is reassuring.

“The other silver lining about it is that most of the kids got infected in the household setting from ways that you would expect them to get [infected],” Dr. Chin-Hong said in an interview.

However, Black and Hispanic children were more likely to contract the disease, underscoring troubling inequities.

“Early on, individuals of color were much less likely to be able to successfully access vaccination,” said first author Ian Hennessee, PhD, MPH, an epidemic intelligence service officer with the CDC and a member of the Special Case Investigation Unit of the Multinational Monkeypox Response Team at the CDC. “We think those kinds of structural inequities really trickled down towards the children and adolescents that have been affected by this outbreak.”

The study was published  in Morbidity and Mortality Weekly Report.
 

A nationwide look at the data

The researchers discussed 83 children and adolescents with monkeypox who came to the CDC’s attention between May 17 and Sept. 24, 2022.

The 83 cases represent 0.3% of the 25,038 reported monkeypox cases in the United States over that period. Of the 28 children aged 12 years or younger, 18 (64%) were boys. Sixteen children were younger than 4 years.

Exposure data were available for 20 (71%) of those aged 0-12. In that group, 19 were exposed at home; 17 cases were due to routine skin-to-skin contact with a household caregiver; and one case was suspected to be caused by fomites (such as a shared towel). Exposure information was unavailable for the remaining case.

Most of the children experienced lesions on the trunk. No lesions were anogenital. Two patients in the youngest age group were hospitalized because of widespread rash that involved the eyelids, and a patient in the 5- to 12-year-old group was hospitalized because of periorbital cellulitis and conjunctivitis.

Among those aged 13-17, there were 55 cases. Of these patients, 89% were boys. Exposure data were available for 35 (64%). In 32 of these patients, the infection occurred from presumed sexual contact. Twenty-three of those adolescents reported male-to-male sexual contact. No case was found to be connected with sexual abuse.

Lesions in the adolescents were mostly truncal or anogenital. Six in this group were hospitalized, and all of them recovered. One adolescent was found to be HIV positive.

Black and Hispanic children accounted for 47% and 35% of all cases, respectively.

Eleven percent of all the children and adolescents were hospitalized, and none received intensive care.

Treatments, when given, included the antiviral drug tecovirimat, intravenous vaccinia immune globulin, and topical trifluridine. There were no deaths.

Ten symptomatic patients attended school or daycare. Among these patients, no secondary transmissions were found to have occurred. Some contacts were offered the JYNNEOS monkeypox vaccine as postexposure prophylaxis.

Limitations of the study included potentially overlooked cases. Data were collected through routine surveillance, children frequently experience rashes, and access to testing has been a challenge, Dr. Hennessee explained.

In addition, data on exposure characteristics were missing for some children.
 

Inequities and the risks of being judged

The outbreak in the United States has eased in recent months. However, though uncommon in children, monkeypox has affected some racial groups disproportionately.

“Especially in the later course of the outbreak, the majority of cases were among Black and Hispanic individuals,” said co-author Rachel E. Harold, MD, an infectious diseases specialist and supervisory medical officer with the District of Columbia Department of Health’s HIV/AIDS, Hepatitis, STDs, and TB Administration.

“Unfortunately, the pediatric cases do reflect the outbreak overall,” she told this news organization.

Dr. Harold noted there have been efforts in D.C. and other jurisdictions, as well as by the White House monkeypox response team, to reach populations at greatest risk and that they were “really trying to make vaccine available to people of color.”

Vaccination clinics often popped up in unexpected locations at short notice, and that made it hard for some people to get to them, Dr. Chin-Hong pointed out.

Another factor was “the public aspect of accessing diagnostics and vaccines and the way that that’s linked to potential judgment or sexual risk,” he added.

“Not everybody’s out,” Dr. Chin-Hong said, referring to members of the LGBTQ community. “In many communities of color, going to get a test or going to get a vaccine essentially means that you’re out.”

For clinicians who suspect monkeypox in a child, Dr. Harold suggests keeping a broad differential diagnosis, looking for an epidemiologic link, and contacting the CDC for assistance. Infected children should be encouraged to avoid touching their own eyes or mucous membranes, she added.

In addition, she said, tecovirimat is a reasonable treatment and is well tolerated by pediatric monkeypox patients with eczema, an underlying condition that could lead to severe disease.

For infected caregivers, Dr. Hennessee said, measures to prevent infecting children at home include isolation, contact precautions, and in some cases, postexposure prophylaxis via vaccination.

For sexually active adolescents, he advised that clinicians offer vaccination, education on sexual health, and testing for HIV and other sexually transmitted infections.

“It’s important to remember that adolescents may be sexually active, and clinicians should do a thorough and nonjudgmental sexual history,” Dr. Harold added. “That is always true, but especially if there is concern for [monkeypox].”

Dr. Hennessee, Dr. Chin-Hong, and Dr. Harold have disclosed no relevant financial relationships.

A version of this article first appeared on Medscape.com.

Monkeypox virus infections in children and adolescents in the United States are rare, and young patients with known infections have all recovered, according to a study from the Centers for Disease Control and Prevention.

In addition, evidence suggests that secondary transmission in schools or childcare facilities may be unlikely.

The study was the first comprehensive study on the impact of monkeypox on children during the 2022 outbreak, according to a statement emailed to this news organization from the California Department of Public Health, one of the state health departments that partnered with the CDC to share information.

News of low infection rates and relatively mild disease was welcome to clinicians, who had braced for severe findings on the basis of sparse prior data, according to Peter Chin-Hong, MD, a professor of medicine and an infectious diseases physician at the University of California, San Francisco.

“We were on heightened alert that kids may do poorly,” said Dr. Chin-Hong, who was not involved in the study but who cared for monkeypox patients during the outbreak. “I think this study is reassuring.

“The other silver lining about it is that most of the kids got infected in the household setting from ways that you would expect them to get [infected],” Dr. Chin-Hong said in an interview.

However, Black and Hispanic children were more likely to contract the disease, underscoring troubling inequities.

“Early on, individuals of color were much less likely to be able to successfully access vaccination,” said first author Ian Hennessee, PhD, MPH, an epidemic intelligence service officer with the CDC and a member of the Special Case Investigation Unit of the Multinational Monkeypox Response Team at the CDC. “We think those kinds of structural inequities really trickled down towards the children and adolescents that have been affected by this outbreak.”

The study was published  in Morbidity and Mortality Weekly Report.
 

A nationwide look at the data

The researchers discussed 83 children and adolescents with monkeypox who came to the CDC’s attention between May 17 and Sept. 24, 2022.

The 83 cases represent 0.3% of the 25,038 reported monkeypox cases in the United States over that period. Of the 28 children aged 12 years or younger, 18 (64%) were boys. Sixteen children were younger than 4 years.

Exposure data were available for 20 (71%) of those aged 0-12. In that group, 19 were exposed at home; 17 cases were due to routine skin-to-skin contact with a household caregiver; and one case was suspected to be caused by fomites (such as a shared towel). Exposure information was unavailable for the remaining case.

Most of the children experienced lesions on the trunk. No lesions were anogenital. Two patients in the youngest age group were hospitalized because of widespread rash that involved the eyelids, and a patient in the 5- to 12-year-old group was hospitalized because of periorbital cellulitis and conjunctivitis.

Among those aged 13-17, there were 55 cases. Of these patients, 89% were boys. Exposure data were available for 35 (64%). In 32 of these patients, the infection occurred from presumed sexual contact. Twenty-three of those adolescents reported male-to-male sexual contact. No case was found to be connected with sexual abuse.

Lesions in the adolescents were mostly truncal or anogenital. Six in this group were hospitalized, and all of them recovered. One adolescent was found to be HIV positive.

Black and Hispanic children accounted for 47% and 35% of all cases, respectively.

Eleven percent of all the children and adolescents were hospitalized, and none received intensive care.

Treatments, when given, included the antiviral drug tecovirimat, intravenous vaccinia immune globulin, and topical trifluridine. There were no deaths.

Ten symptomatic patients attended school or daycare. Among these patients, no secondary transmissions were found to have occurred. Some contacts were offered the JYNNEOS monkeypox vaccine as postexposure prophylaxis.

Limitations of the study included potentially overlooked cases. Data were collected through routine surveillance, children frequently experience rashes, and access to testing has been a challenge, Dr. Hennessee explained.

In addition, data on exposure characteristics were missing for some children.
 

Inequities and the risks of being judged

The outbreak in the United States has eased in recent months. However, though uncommon in children, monkeypox has affected some racial groups disproportionately.

“Especially in the later course of the outbreak, the majority of cases were among Black and Hispanic individuals,” said co-author Rachel E. Harold, MD, an infectious diseases specialist and supervisory medical officer with the District of Columbia Department of Health’s HIV/AIDS, Hepatitis, STDs, and TB Administration.

“Unfortunately, the pediatric cases do reflect the outbreak overall,” she told this news organization.

Dr. Harold noted there have been efforts in D.C. and other jurisdictions, as well as by the White House monkeypox response team, to reach populations at greatest risk and that they were “really trying to make vaccine available to people of color.”

Vaccination clinics often popped up in unexpected locations at short notice, and that made it hard for some people to get to them, Dr. Chin-Hong pointed out.

Another factor was “the public aspect of accessing diagnostics and vaccines and the way that that’s linked to potential judgment or sexual risk,” he added.

“Not everybody’s out,” Dr. Chin-Hong said, referring to members of the LGBTQ community. “In many communities of color, going to get a test or going to get a vaccine essentially means that you’re out.”

For clinicians who suspect monkeypox in a child, Dr. Harold suggests keeping a broad differential diagnosis, looking for an epidemiologic link, and contacting the CDC for assistance. Infected children should be encouraged to avoid touching their own eyes or mucous membranes, she added.

In addition, she said, tecovirimat is a reasonable treatment and is well tolerated by pediatric monkeypox patients with eczema, an underlying condition that could lead to severe disease.

For infected caregivers, Dr. Hennessee said, measures to prevent infecting children at home include isolation, contact precautions, and in some cases, postexposure prophylaxis via vaccination.

For sexually active adolescents, he advised that clinicians offer vaccination, education on sexual health, and testing for HIV and other sexually transmitted infections.

“It’s important to remember that adolescents may be sexually active, and clinicians should do a thorough and nonjudgmental sexual history,” Dr. Harold added. “That is always true, but especially if there is concern for [monkeypox].”

Dr. Hennessee, Dr. Chin-Hong, and Dr. Harold have disclosed no relevant financial relationships.

A version of this article first appeared on Medscape.com.

Monkeypox, though often mild, may be severe and even fatal in immunocompromised individuals, particularly those with untreated AIDS, according to a Centers for Disease Control and Prevention study in Morbidity and Mortality Weekly Report.

The study described a group of patients recently treated for severe monkeypox. The majority were Black, HIV positive, and not receiving treatment. Many were also facing homelessness.

The authors urged HIV testing for all sexually active individuals with suspected monkeypox. Early or prolonged monkeypox treatment may be necessary, they concluded.

Coauthor John T. Brooks, MD, called the study “a real call to action.”

“If we want to reduce cases of severe monkeypox, we need to reduce the number of persons with HIV who are undiagnosed and not treated,” said Dr. Brooks, a medical epidemiologist who is chief medical officer of CDC›s multinational monkeypox response. Dr. Brooks also leads the epidemiology research team in CDC’s division of HIV/AIDS prevention.

The article reflects long-existing health disparities, noted Richard Silvera, MD, MPH, CPH, who is associate program director of the infectious diseases fellowship and assistant professor of medicine (infectious diseases) at the Icahn School of Medicine at Mount Sinai, New York. He was not involved with the study.

“These patients really have not been served by the health care system,” Dr. Silvera said. “Monkeypox is just really taking advantage of that.”
 

How severe monkeypox can manifest

The authors reported on 57 adults hospitalized with severe monkeypox between Aug. 10 and Sept. 10, 2022, for whose care the providers sought CDC consultation.

The vast majority (95%) were men, their median age was 34 years, and 68% were Black. Nearly one in four were homeless (23%).

Overall, 47 (82%) were HIV positive, of whom just 4 had been receiving antiretroviral therapy (ART). Of 43 for whom CD4 counts were known, 71% had fewer than 50 CD4 cells/mm3.

Clinical signs included severe skin lesions in all patients and severe mucosal lesions in 68%. Other affected organ systems included lungs (21%), eyes (21%), and central nervous system (7%).

Treatments included oral or intravenous tecovirimat (93% and 65%, respectively), vaccinia immune globulin intravenous (VIGIV, 51%), and cidofovir (23%).

Nearly 1 in 3 patients (30%) received care in an ICU; 12 died (21%). Monkeypox was considered the cause or a contributing factor in five of the deaths and not a factor in one death; the remaining six deaths are under investigation.
 

Case studies

The report included details of three representative cases of the CDC consultations.

One was a Hispanic man in his 20s with a fever of 102.8° F, a rash including eschars, oral lesions, neck mass, and cervical lymphadenopathy. He had tested positive for monkeypox as an outpatient and upon admission was found to be HIV positive, with a CD4 count of 79 cells/mm³. He experienced a severe and ultimately fatal clinical course that included intubation, refractory hypotension, seizures, renal failure, and cardiac arrest. An autopsy revealed diffuse organ necrosis plus orthopoxvirus and cytomegalovirus.

The second was a Black man in his 30s with untreated AIDS and diffuse rash. He was tested and treated for gonorrhea, chlamydia, and syphilis before phimosis and urinary retention led to admission and a monkeypox diagnosis 4 weeks after his rash began. He was discharged with oral tecovirimat, but his skin lesions developed necrosis and he was readmitted twice, each time with new lesions. His clinical course included methicillin-resistant Staphylococcus aureus bacteremia, atrial fibrillation, eye and ear involvement, a suprapubic catheter, and progressive necrosis of his lesions. As of the CDC report, he was receiving ART and intravenous tecovirimat.

The third patient, a White man in his 40s with untreated AIDS, presented with diffuse rash. He was promptly diagnosed with monkeypox and admitted for pain control. He was discharged with oral tecovirimat and ART, but homelessness and food insecurity jeopardized the absorption of his tecovirimat (which depends on a full fatty meal), and the lesions worsened. Despite readmission and aggressive medical treatment, the patient required finger debridement and a toe amputation. After discharge, he was again readmitted for lesions and pain and, at report publication, remained hospitalized, taking oral tecovirimat and ART.

The patients in the study may not be typical of severe monkeypox cases, wrote the authors reported. Deaths after the study period were not counted.
 

Fewer cases, some severe

As of Nov. 7, the CDC has confirmed 28,709 monkeypox cases. These have trended downward since August. Most people with recent diagnoses are men who are gay, bisexual, same gender loving, or who have sex with men, and most are Black, according to Brooks.

Dr. Brooks urges clinicians to report suspected monkeypox cases – especially severe ones – to their health departments.

“We don’t have a good bead on exactly how many severe cases there are in the States because of complexities in our surveillance systems,” Dr. Brooks said.

For patients with suspected or confirmed monkeypox, Brooks recommends testing for sexually transmitted infections, including HIV if status is unknown. Patients with HIV should receive prompt ART. For those at risk for severe disease, the authors recommend early treatment for suspected monkeypox, even before results are back. Some patients may benefit from tecovirimat courses lasting beyond 14 days, plus additional antivirals (cidofovir or brincidofovir) and/or VIGIV.

“With severe cases, clinicians may want to consider the value of more than one drug to attack the virus at different stages of its replication cycle,” Dr. Brooks said.
 

Inequities matter

The authors called on providers to engage communities burdened by HIV and to ensure access to not only monkeypox vaccination, diagnosis, and treatment but also sustained HIV care.

Dr. Silvera added that providers need to tailor care plans to patients’ social determinants of health. For example, he explained, inpatient care for monkeypox could be appropriate for some patients facing homelessness and food insecurity – even if they are able to take tecovirimat orally.

He recommends tapping others’ expertise: “Our social work colleagues are well versed in this.”

“I don’t think these clinicians failed these patients. ... I think everyone made all the right choices medically,” Dr. Silvera added. “I think that the system failed these patients – and we as clinicians are part of those systems. So we also have the power to change those systems. And I think we just need to start opening our eyes to that and [start] to work together towards that goal to take better care of our patients.”

Dr. Brooks reported no relevant financial disclosures.

A version of this article first appeared on Medscape.com.

Monkeypox, though often mild, may be severe and even fatal in immunocompromised individuals, particularly those with untreated AIDS, according to a Centers for Disease Control and Prevention study in Morbidity and Mortality Weekly Report.

The study described a group of patients recently treated for severe monkeypox. The majority were Black, HIV positive, and not receiving treatment. Many were also facing homelessness.

The authors urged HIV testing for all sexually active individuals with suspected monkeypox. Early or prolonged monkeypox treatment may be necessary, they concluded.

Coauthor John T. Brooks, MD, called the study “a real call to action.”

“If we want to reduce cases of severe monkeypox, we need to reduce the number of persons with HIV who are undiagnosed and not treated,” said Dr. Brooks, a medical epidemiologist who is chief medical officer of CDC›s multinational monkeypox response. Dr. Brooks also leads the epidemiology research team in CDC’s division of HIV/AIDS prevention.

The article reflects long-existing health disparities, noted Richard Silvera, MD, MPH, CPH, who is associate program director of the infectious diseases fellowship and assistant professor of medicine (infectious diseases) at the Icahn School of Medicine at Mount Sinai, New York. He was not involved with the study.

“These patients really have not been served by the health care system,” Dr. Silvera said. “Monkeypox is just really taking advantage of that.”
 

How severe monkeypox can manifest

The authors reported on 57 adults hospitalized with severe monkeypox between Aug. 10 and Sept. 10, 2022, for whose care the providers sought CDC consultation.

The vast majority (95%) were men, their median age was 34 years, and 68% were Black. Nearly one in four were homeless (23%).

Overall, 47 (82%) were HIV positive, of whom just 4 had been receiving antiretroviral therapy (ART). Of 43 for whom CD4 counts were known, 71% had fewer than 50 CD4 cells/mm3.

Clinical signs included severe skin lesions in all patients and severe mucosal lesions in 68%. Other affected organ systems included lungs (21%), eyes (21%), and central nervous system (7%).

Treatments included oral or intravenous tecovirimat (93% and 65%, respectively), vaccinia immune globulin intravenous (VIGIV, 51%), and cidofovir (23%).

Nearly 1 in 3 patients (30%) received care in an ICU; 12 died (21%). Monkeypox was considered the cause or a contributing factor in five of the deaths and not a factor in one death; the remaining six deaths are under investigation.
 

Case studies

The report included details of three representative cases of the CDC consultations.

One was a Hispanic man in his 20s with a fever of 102.8° F, a rash including eschars, oral lesions, neck mass, and cervical lymphadenopathy. He had tested positive for monkeypox as an outpatient and upon admission was found to be HIV positive, with a CD4 count of 79 cells/mm³. He experienced a severe and ultimately fatal clinical course that included intubation, refractory hypotension, seizures, renal failure, and cardiac arrest. An autopsy revealed diffuse organ necrosis plus orthopoxvirus and cytomegalovirus.

The second was a Black man in his 30s with untreated AIDS and diffuse rash. He was tested and treated for gonorrhea, chlamydia, and syphilis before phimosis and urinary retention led to admission and a monkeypox diagnosis 4 weeks after his rash began. He was discharged with oral tecovirimat, but his skin lesions developed necrosis and he was readmitted twice, each time with new lesions. His clinical course included methicillin-resistant Staphylococcus aureus bacteremia, atrial fibrillation, eye and ear involvement, a suprapubic catheter, and progressive necrosis of his lesions. As of the CDC report, he was receiving ART and intravenous tecovirimat.

The third patient, a White man in his 40s with untreated AIDS, presented with diffuse rash. He was promptly diagnosed with monkeypox and admitted for pain control. He was discharged with oral tecovirimat and ART, but homelessness and food insecurity jeopardized the absorption of his tecovirimat (which depends on a full fatty meal), and the lesions worsened. Despite readmission and aggressive medical treatment, the patient required finger debridement and a toe amputation. After discharge, he was again readmitted for lesions and pain and, at report publication, remained hospitalized, taking oral tecovirimat and ART.

The patients in the study may not be typical of severe monkeypox cases, wrote the authors reported. Deaths after the study period were not counted.
 

Fewer cases, some severe

As of Nov. 7, the CDC has confirmed 28,709 monkeypox cases. These have trended downward since August. Most people with recent diagnoses are men who are gay, bisexual, same gender loving, or who have sex with men, and most are Black, according to Brooks.

Dr. Brooks urges clinicians to report suspected monkeypox cases – especially severe ones – to their health departments.

“We don’t have a good bead on exactly how many severe cases there are in the States because of complexities in our surveillance systems,” Dr. Brooks said.

For patients with suspected or confirmed monkeypox, Brooks recommends testing for sexually transmitted infections, including HIV if status is unknown. Patients with HIV should receive prompt ART. For those at risk for severe disease, the authors recommend early treatment for suspected monkeypox, even before results are back. Some patients may benefit from tecovirimat courses lasting beyond 14 days, plus additional antivirals (cidofovir or brincidofovir) and/or VIGIV.

“With severe cases, clinicians may want to consider the value of more than one drug to attack the virus at different stages of its replication cycle,” Dr. Brooks said.
 

Inequities matter

The authors called on providers to engage communities burdened by HIV and to ensure access to not only monkeypox vaccination, diagnosis, and treatment but also sustained HIV care.

Dr. Silvera added that providers need to tailor care plans to patients’ social determinants of health. For example, he explained, inpatient care for monkeypox could be appropriate for some patients facing homelessness and food insecurity – even if they are able to take tecovirimat orally.

He recommends tapping others’ expertise: “Our social work colleagues are well versed in this.”

“I don’t think these clinicians failed these patients. ... I think everyone made all the right choices medically,” Dr. Silvera added. “I think that the system failed these patients – and we as clinicians are part of those systems. So we also have the power to change those systems. And I think we just need to start opening our eyes to that and [start] to work together towards that goal to take better care of our patients.”

Dr. Brooks reported no relevant financial disclosures.

A version of this article first appeared on Medscape.com.

Monkeypox, though often mild, may be severe and even fatal in immunocompromised individuals, particularly those with untreated AIDS, according to a Centers for Disease Control and Prevention study in Morbidity and Mortality Weekly Report.

The study described a group of patients recently treated for severe monkeypox. The majority were Black, HIV positive, and not receiving treatment. Many were also facing homelessness.

The authors urged HIV testing for all sexually active individuals with suspected monkeypox. Early or prolonged monkeypox treatment may be necessary, they concluded.

Coauthor John T. Brooks, MD, called the study “a real call to action.”

“If we want to reduce cases of severe monkeypox, we need to reduce the number of persons with HIV who are undiagnosed and not treated,” said Dr. Brooks, a medical epidemiologist who is chief medical officer of CDC›s multinational monkeypox response. Dr. Brooks also leads the epidemiology research team in CDC’s division of HIV/AIDS prevention.

The article reflects long-existing health disparities, noted Richard Silvera, MD, MPH, CPH, who is associate program director of the infectious diseases fellowship and assistant professor of medicine (infectious diseases) at the Icahn School of Medicine at Mount Sinai, New York. He was not involved with the study.

“These patients really have not been served by the health care system,” Dr. Silvera said. “Monkeypox is just really taking advantage of that.”
 

How severe monkeypox can manifest

The authors reported on 57 adults hospitalized with severe monkeypox between Aug. 10 and Sept. 10, 2022, for whose care the providers sought CDC consultation.

The vast majority (95%) were men, their median age was 34 years, and 68% were Black. Nearly one in four were homeless (23%).

Overall, 47 (82%) were HIV positive, of whom just 4 had been receiving antiretroviral therapy (ART). Of 43 for whom CD4 counts were known, 71% had fewer than 50 CD4 cells/mm3.

Clinical signs included severe skin lesions in all patients and severe mucosal lesions in 68%. Other affected organ systems included lungs (21%), eyes (21%), and central nervous system (7%).

Treatments included oral or intravenous tecovirimat (93% and 65%, respectively), vaccinia immune globulin intravenous (VIGIV, 51%), and cidofovir (23%).

Nearly 1 in 3 patients (30%) received care in an ICU; 12 died (21%). Monkeypox was considered the cause or a contributing factor in five of the deaths and not a factor in one death; the remaining six deaths are under investigation.
 

Case studies

The report included details of three representative cases of the CDC consultations.

One was a Hispanic man in his 20s with a fever of 102.8° F, a rash including eschars, oral lesions, neck mass, and cervical lymphadenopathy. He had tested positive for monkeypox as an outpatient and upon admission was found to be HIV positive, with a CD4 count of 79 cells/mm³. He experienced a severe and ultimately fatal clinical course that included intubation, refractory hypotension, seizures, renal failure, and cardiac arrest. An autopsy revealed diffuse organ necrosis plus orthopoxvirus and cytomegalovirus.

The second was a Black man in his 30s with untreated AIDS and diffuse rash. He was tested and treated for gonorrhea, chlamydia, and syphilis before phimosis and urinary retention led to admission and a monkeypox diagnosis 4 weeks after his rash began. He was discharged with oral tecovirimat, but his skin lesions developed necrosis and he was readmitted twice, each time with new lesions. His clinical course included methicillin-resistant Staphylococcus aureus bacteremia, atrial fibrillation, eye and ear involvement, a suprapubic catheter, and progressive necrosis of his lesions. As of the CDC report, he was receiving ART and intravenous tecovirimat.

The third patient, a White man in his 40s with untreated AIDS, presented with diffuse rash. He was promptly diagnosed with monkeypox and admitted for pain control. He was discharged with oral tecovirimat and ART, but homelessness and food insecurity jeopardized the absorption of his tecovirimat (which depends on a full fatty meal), and the lesions worsened. Despite readmission and aggressive medical treatment, the patient required finger debridement and a toe amputation. After discharge, he was again readmitted for lesions and pain and, at report publication, remained hospitalized, taking oral tecovirimat and ART.

The patients in the study may not be typical of severe monkeypox cases, wrote the authors reported. Deaths after the study period were not counted.
 

Fewer cases, some severe

As of Nov. 7, the CDC has confirmed 28,709 monkeypox cases. These have trended downward since August. Most people with recent diagnoses are men who are gay, bisexual, same gender loving, or who have sex with men, and most are Black, according to Brooks.

Dr. Brooks urges clinicians to report suspected monkeypox cases – especially severe ones – to their health departments.

“We don’t have a good bead on exactly how many severe cases there are in the States because of complexities in our surveillance systems,” Dr. Brooks said.

For patients with suspected or confirmed monkeypox, Brooks recommends testing for sexually transmitted infections, including HIV if status is unknown. Patients with HIV should receive prompt ART. For those at risk for severe disease, the authors recommend early treatment for suspected monkeypox, even before results are back. Some patients may benefit from tecovirimat courses lasting beyond 14 days, plus additional antivirals (cidofovir or brincidofovir) and/or VIGIV.

“With severe cases, clinicians may want to consider the value of more than one drug to attack the virus at different stages of its replication cycle,” Dr. Brooks said.
 

Inequities matter

The authors called on providers to engage communities burdened by HIV and to ensure access to not only monkeypox vaccination, diagnosis, and treatment but also sustained HIV care.

Dr. Silvera added that providers need to tailor care plans to patients’ social determinants of health. For example, he explained, inpatient care for monkeypox could be appropriate for some patients facing homelessness and food insecurity – even if they are able to take tecovirimat orally.

He recommends tapping others’ expertise: “Our social work colleagues are well versed in this.”

“I don’t think these clinicians failed these patients. ... I think everyone made all the right choices medically,” Dr. Silvera added. “I think that the system failed these patients – and we as clinicians are part of those systems. So we also have the power to change those systems. And I think we just need to start opening our eyes to that and [start] to work together towards that goal to take better care of our patients.”

Dr. Brooks reported no relevant financial disclosures.

A version of this article first appeared on Medscape.com.

BUENOS AIRES – Emerging invasive fungal infections represent a new diagnostic and therapeutic challenge. To address their growing clinical impact on immunocompromised patients requires better local epidemiologic records, said a specialist at the XXII Congress of the Argentine Society of Infectology.
 

“To know that these fungal infections exist, we need epidemiologists, doctors, and microbiologists to join in constant and ongoing multidisciplinary work to generate the necessary databases and to know the pathologies that we have. I believe that in this respect we are falling short,” said Javier Afeltra, PhD, a mycologist at the Ramos Mejía Hospital in Buenos Aires, professor of microbiology at the School of Medicine of the University of Buenos Aires, and coordinator of the commission of immunocompromised patients of the Argentine Society of Infectious Diseases.

“There is some change in mentality that encourages professionals to report the cases they detect – for example, in scientific meetings,” Dr. Afeltra told this news orgnization. “But the problem is that there is no unified registry.

“That’s what we lack: a place to record all those isolated cases. Records where clinical and microbiological data are together within a click. Perhaps the microbiologists report their findings to the Malbrán Institute, an Argentine reference center for infectious disease research, but we do not know what the patients had. And we doctors may get together to make records of what happens clinically with the patient, but the germ data are elsewhere. We need a common registry,” he stressed.

“The main importance of a registry of this type is that it would allow a diagnostic and therapeutic decision to be made that is appropriate to the epidemiological profile of the country and the region, not looking at what they do in the North. Most likely, the best antifungal treatment for our country differs from what is indicated in the guidelines written elsewhere,” said Dr. Afeltra.

Dr. Afeltra pointed out that in the United States, when an oncohematology patient does not respond to antimicrobial treatment, the first thing that doctors think is that the patient has aspergillosis or mucormycosis, in which the fungal infection is caused by filamentous fungi.

But an analysis of data from the REMINI registry – the only prospective, observational, multicenter surveillance registry for invasive mycoses in immunocompromised patients (excluding HIV infection) in Argentina, which has been in existence since 2010 – tells a different story. The most prevalent fungal infections turned out to be those caused by Aspergillus species, followed by Fusarium species. Together, they account for more than half of cases. Mucoral infections (mucormycosis) account for less than 6%. And the initial treatments for these diseases could be different.

Changes in the local epidemiology can occur because the behavior of phytopathogenic fungi found in the environment can be modified. For example, cases of chronic mucormycosis can be detected in China but are virtually nonexistent on this side of the Greenwich meridian, Dr. Afeltra said.

“Nature is not the same in geographical areas, and the fungi … we breathe are completely different, so patients have different infections and require different diagnostic and treatment approaches,” he stressed.

Dr. Afeltra mentioned different fungi that are emerging locally and globally, including yeasts, septate, dimorphic, and pigmented hyaline fungi, that have a variable response to antifungal drugs and are associated with high mortality, “which has a lot to do with a later diagnosis,” he said, noting that reports have increased worldwide. A barrier to sharing this information more widely with the professional community, in addition to the lack of records, is the difficulty in publishing cases or series of cases in indexed journals.

Another challenge in characterizing the phenomenon is in regard to taxonomic reclassifications of fungi. Such reclassifications can mean that “perhaps we are speaking of the same pathogen in similar situations, believing that we are referring to different pathogens,” said Dr. Afeltra.
 

Clinical pearls related to emerging fungal pathogens

Candida auris. This organism has emerged simultaneously on several continents. It has pathogenicity factors typical of the genus, such as biofilm formation and production of phospholipases and proteinases, although it has greater thermal tolerance. In hospitals, it colonizes for weeks and months. In Argentina, it is resistant to multiple antifungal agents. Sensitivity is variable in different geographical regions. Most strains are resistant to fluconazole, and there is variable resistance to the other triazoles [which are not normally used to treat candidemia]. In the United States, in vitro resistance to amphotericin B is up to 30%, and resistance to echinocandins is up to 5%. New drugs such as rezafungin and ibrexafungerp are being studied. Infection control is similar to that used to control Clostridium difficile.

Fusarium. This genus affects immunocompromised patients, including transplant recipients of solid organs and hematopoietic progenitor cells and patients with neutropenia. The genus has various species, included within complexes, such as F. solani SC, F. oxysporum SC, and F. fujikuroi SC, with clinical manifestations similar to those of aspergillosis. In addition to the pulmonary and disseminated forms, there may be skin involvement attributable to dissemination from a respiratory focus or by contiguity from a focus of onychomycosis. In general, mortality is high, and responses to antifungal agents are variable. Some species are more sensitive to voriconazole or posaconazole, and others less so. All show in vitro resistance to itraconazole. In Argentina, voriconazole is usually used as initial treatment, and in special cases, liposomal amphotericin B or combinations. Fosmanogepix is being evaluated for the future.

Azole-resistant aspergillosis. This infection has shown resistance to itraconazole and third-generation azole drugs. In immunocompromised patients, mortlaity is high. Early detection is key. It is sensitive to amphotericin B and echinocandins. It is generally treated with liposomal amphotericin B. Olorofim and fosmanogepix are being studied.

Pulmonary aspergillosis associated with COVID-19. This infection is associated with high mortality among intubated patients. Signs and symptoms include fever, pleural effusion, hemoptysis, and chest pain, with infiltrates or cavitations on imaging. Determining the diagnosis is difficult. “We couldn’t perform lung biopsies, and it was difficult for us to get patients out of intensive care units for CT scans. We treated the proven cases. We treated the probable cases, and those that had a very low certainty of disease were also treated. We came across this emergency and tried to do the best we could,” said Dr. Afeltra. A digital readout lateral flow trial (Sona Aspergillus Galactomannan LFA) for the quantification of galactomannan, a cell wall component of the Aspergillus genus, proved to be a useful tool for screening and diagnosing patients with probable pulmonary aspergillosis associated with COVID-19. The incidence of invasive mycosis was around 10% among 185 seriously ill COVID-19 patients, according to an Argentine multicenter prospective study in which Dr. Afeltra participated.

Scedosporium and Lomentospora. These genera are rarer septate hyaline fungi. Scedosporium is a complex of species. One species, S. apiospermum, can colonize pediatric patients with cystic fibrosis. Lomentospora prolificans is a multiresistant fungus. It produces pulmonary compromise or disseminated infection. The response to antifungal agents is variable, with a high minimum inhibitory concentration for amphotericin B and isavuconazole. Patients are usually treated with voriconazole alone or in combination with terbinafine or micafungin. Olorofim is emerging as a promising treatment.

Dr. Afeltra has received fees from Biotoscana, Gador, Pfizer, Merck, and Sandoz.

This article was translated from the Medscape Spanish edition, a version appeared on Medscape.com.

BUENOS AIRES – Emerging invasive fungal infections represent a new diagnostic and therapeutic challenge. To address their growing clinical impact on immunocompromised patients requires better local epidemiologic records, said a specialist at the XXII Congress of the Argentine Society of Infectology.
 

“To know that these fungal infections exist, we need epidemiologists, doctors, and microbiologists to join in constant and ongoing multidisciplinary work to generate the necessary databases and to know the pathologies that we have. I believe that in this respect we are falling short,” said Javier Afeltra, PhD, a mycologist at the Ramos Mejía Hospital in Buenos Aires, professor of microbiology at the School of Medicine of the University of Buenos Aires, and coordinator of the commission of immunocompromised patients of the Argentine Society of Infectious Diseases.

“There is some change in mentality that encourages professionals to report the cases they detect – for example, in scientific meetings,” Dr. Afeltra told this news orgnization. “But the problem is that there is no unified registry.

“That’s what we lack: a place to record all those isolated cases. Records where clinical and microbiological data are together within a click. Perhaps the microbiologists report their findings to the Malbrán Institute, an Argentine reference center for infectious disease research, but we do not know what the patients had. And we doctors may get together to make records of what happens clinically with the patient, but the germ data are elsewhere. We need a common registry,” he stressed.

“The main importance of a registry of this type is that it would allow a diagnostic and therapeutic decision to be made that is appropriate to the epidemiological profile of the country and the region, not looking at what they do in the North. Most likely, the best antifungal treatment for our country differs from what is indicated in the guidelines written elsewhere,” said Dr. Afeltra.

Dr. Afeltra pointed out that in the United States, when an oncohematology patient does not respond to antimicrobial treatment, the first thing that doctors think is that the patient has aspergillosis or mucormycosis, in which the fungal infection is caused by filamentous fungi.

But an analysis of data from the REMINI registry – the only prospective, observational, multicenter surveillance registry for invasive mycoses in immunocompromised patients (excluding HIV infection) in Argentina, which has been in existence since 2010 – tells a different story. The most prevalent fungal infections turned out to be those caused by Aspergillus species, followed by Fusarium species. Together, they account for more than half of cases. Mucoral infections (mucormycosis) account for less than 6%. And the initial treatments for these diseases could be different.

Changes in the local epidemiology can occur because the behavior of phytopathogenic fungi found in the environment can be modified. For example, cases of chronic mucormycosis can be detected in China but are virtually nonexistent on this side of the Greenwich meridian, Dr. Afeltra said.

“Nature is not the same in geographical areas, and the fungi … we breathe are completely different, so patients have different infections and require different diagnostic and treatment approaches,” he stressed.

Dr. Afeltra mentioned different fungi that are emerging locally and globally, including yeasts, septate, dimorphic, and pigmented hyaline fungi, that have a variable response to antifungal drugs and are associated with high mortality, “which has a lot to do with a later diagnosis,” he said, noting that reports have increased worldwide. A barrier to sharing this information more widely with the professional community, in addition to the lack of records, is the difficulty in publishing cases or series of cases in indexed journals.

Another challenge in characterizing the phenomenon is in regard to taxonomic reclassifications of fungi. Such reclassifications can mean that “perhaps we are speaking of the same pathogen in similar situations, believing that we are referring to different pathogens,” said Dr. Afeltra.
 

Clinical pearls related to emerging fungal pathogens

Candida auris. This organism has emerged simultaneously on several continents. It has pathogenicity factors typical of the genus, such as biofilm formation and production of phospholipases and proteinases, although it has greater thermal tolerance. In hospitals, it colonizes for weeks and months. In Argentina, it is resistant to multiple antifungal agents. Sensitivity is variable in different geographical regions. Most strains are resistant to fluconazole, and there is variable resistance to the other triazoles [which are not normally used to treat candidemia]. In the United States, in vitro resistance to amphotericin B is up to 30%, and resistance to echinocandins is up to 5%. New drugs such as rezafungin and ibrexafungerp are being studied. Infection control is similar to that used to control Clostridium difficile.

Fusarium. This genus affects immunocompromised patients, including transplant recipients of solid organs and hematopoietic progenitor cells and patients with neutropenia. The genus has various species, included within complexes, such as F. solani SC, F. oxysporum SC, and F. fujikuroi SC, with clinical manifestations similar to those of aspergillosis. In addition to the pulmonary and disseminated forms, there may be skin involvement attributable to dissemination from a respiratory focus or by contiguity from a focus of onychomycosis. In general, mortality is high, and responses to antifungal agents are variable. Some species are more sensitive to voriconazole or posaconazole, and others less so. All show in vitro resistance to itraconazole. In Argentina, voriconazole is usually used as initial treatment, and in special cases, liposomal amphotericin B or combinations. Fosmanogepix is being evaluated for the future.

Azole-resistant aspergillosis. This infection has shown resistance to itraconazole and third-generation azole drugs. In immunocompromised patients, mortlaity is high. Early detection is key. It is sensitive to amphotericin B and echinocandins. It is generally treated with liposomal amphotericin B. Olorofim and fosmanogepix are being studied.

Pulmonary aspergillosis associated with COVID-19. This infection is associated with high mortality among intubated patients. Signs and symptoms include fever, pleural effusion, hemoptysis, and chest pain, with infiltrates or cavitations on imaging. Determining the diagnosis is difficult. “We couldn’t perform lung biopsies, and it was difficult for us to get patients out of intensive care units for CT scans. We treated the proven cases. We treated the probable cases, and those that had a very low certainty of disease were also treated. We came across this emergency and tried to do the best we could,” said Dr. Afeltra. A digital readout lateral flow trial (Sona Aspergillus Galactomannan LFA) for the quantification of galactomannan, a cell wall component of the Aspergillus genus, proved to be a useful tool for screening and diagnosing patients with probable pulmonary aspergillosis associated with COVID-19. The incidence of invasive mycosis was around 10% among 185 seriously ill COVID-19 patients, according to an Argentine multicenter prospective study in which Dr. Afeltra participated.

Scedosporium and Lomentospora. These genera are rarer septate hyaline fungi. Scedosporium is a complex of species. One species, S. apiospermum, can colonize pediatric patients with cystic fibrosis. Lomentospora prolificans is a multiresistant fungus. It produces pulmonary compromise or disseminated infection. The response to antifungal agents is variable, with a high minimum inhibitory concentration for amphotericin B and isavuconazole. Patients are usually treated with voriconazole alone or in combination with terbinafine or micafungin. Olorofim is emerging as a promising treatment.

Dr. Afeltra has received fees from Biotoscana, Gador, Pfizer, Merck, and Sandoz.

This article was translated from the Medscape Spanish edition, a version appeared on Medscape.com.

BUENOS AIRES – Emerging invasive fungal infections represent a new diagnostic and therapeutic challenge. To address their growing clinical impact on immunocompromised patients requires better local epidemiologic records, said a specialist at the XXII Congress of the Argentine Society of Infectology.
 

“To know that these fungal infections exist, we need epidemiologists, doctors, and microbiologists to join in constant and ongoing multidisciplinary work to generate the necessary databases and to know the pathologies that we have. I believe that in this respect we are falling short,” said Javier Afeltra, PhD, a mycologist at the Ramos Mejía Hospital in Buenos Aires, professor of microbiology at the School of Medicine of the University of Buenos Aires, and coordinator of the commission of immunocompromised patients of the Argentine Society of Infectious Diseases.

“There is some change in mentality that encourages professionals to report the cases they detect – for example, in scientific meetings,” Dr. Afeltra told this news orgnization. “But the problem is that there is no unified registry.

“That’s what we lack: a place to record all those isolated cases. Records where clinical and microbiological data are together within a click. Perhaps the microbiologists report their findings to the Malbrán Institute, an Argentine reference center for infectious disease research, but we do not know what the patients had. And we doctors may get together to make records of what happens clinically with the patient, but the germ data are elsewhere. We need a common registry,” he stressed.

“The main importance of a registry of this type is that it would allow a diagnostic and therapeutic decision to be made that is appropriate to the epidemiological profile of the country and the region, not looking at what they do in the North. Most likely, the best antifungal treatment for our country differs from what is indicated in the guidelines written elsewhere,” said Dr. Afeltra.

Dr. Afeltra pointed out that in the United States, when an oncohematology patient does not respond to antimicrobial treatment, the first thing that doctors think is that the patient has aspergillosis or mucormycosis, in which the fungal infection is caused by filamentous fungi.

But an analysis of data from the REMINI registry – the only prospective, observational, multicenter surveillance registry for invasive mycoses in immunocompromised patients (excluding HIV infection) in Argentina, which has been in existence since 2010 – tells a different story. The most prevalent fungal infections turned out to be those caused by Aspergillus species, followed by Fusarium species. Together, they account for more than half of cases. Mucoral infections (mucormycosis) account for less than 6%. And the initial treatments for these diseases could be different.

Changes in the local epidemiology can occur because the behavior of phytopathogenic fungi found in the environment can be modified. For example, cases of chronic mucormycosis can be detected in China but are virtually nonexistent on this side of the Greenwich meridian, Dr. Afeltra said.

“Nature is not the same in geographical areas, and the fungi … we breathe are completely different, so patients have different infections and require different diagnostic and treatment approaches,” he stressed.

Dr. Afeltra mentioned different fungi that are emerging locally and globally, including yeasts, septate, dimorphic, and pigmented hyaline fungi, that have a variable response to antifungal drugs and are associated with high mortality, “which has a lot to do with a later diagnosis,” he said, noting that reports have increased worldwide. A barrier to sharing this information more widely with the professional community, in addition to the lack of records, is the difficulty in publishing cases or series of cases in indexed journals.

Another challenge in characterizing the phenomenon is in regard to taxonomic reclassifications of fungi. Such reclassifications can mean that “perhaps we are speaking of the same pathogen in similar situations, believing that we are referring to different pathogens,” said Dr. Afeltra.
 

Clinical pearls related to emerging fungal pathogens

Candida auris. This organism has emerged simultaneously on several continents. It has pathogenicity factors typical of the genus, such as biofilm formation and production of phospholipases and proteinases, although it has greater thermal tolerance. In hospitals, it colonizes for weeks and months. In Argentina, it is resistant to multiple antifungal agents. Sensitivity is variable in different geographical regions. Most strains are resistant to fluconazole, and there is variable resistance to the other triazoles [which are not normally used to treat candidemia]. In the United States, in vitro resistance to amphotericin B is up to 30%, and resistance to echinocandins is up to 5%. New drugs such as rezafungin and ibrexafungerp are being studied. Infection control is similar to that used to control Clostridium difficile.

Fusarium. This genus affects immunocompromised patients, including transplant recipients of solid organs and hematopoietic progenitor cells and patients with neutropenia. The genus has various species, included within complexes, such as F. solani SC, F. oxysporum SC, and F. fujikuroi SC, with clinical manifestations similar to those of aspergillosis. In addition to the pulmonary and disseminated forms, there may be skin involvement attributable to dissemination from a respiratory focus or by contiguity from a focus of onychomycosis. In general, mortality is high, and responses to antifungal agents are variable. Some species are more sensitive to voriconazole or posaconazole, and others less so. All show in vitro resistance to itraconazole. In Argentina, voriconazole is usually used as initial treatment, and in special cases, liposomal amphotericin B or combinations. Fosmanogepix is being evaluated for the future.

Azole-resistant aspergillosis. This infection has shown resistance to itraconazole and third-generation azole drugs. In immunocompromised patients, mortlaity is high. Early detection is key. It is sensitive to amphotericin B and echinocandins. It is generally treated with liposomal amphotericin B. Olorofim and fosmanogepix are being studied.

Pulmonary aspergillosis associated with COVID-19. This infection is associated with high mortality among intubated patients. Signs and symptoms include fever, pleural effusion, hemoptysis, and chest pain, with infiltrates or cavitations on imaging. Determining the diagnosis is difficult. “We couldn’t perform lung biopsies, and it was difficult for us to get patients out of intensive care units for CT scans. We treated the proven cases. We treated the probable cases, and those that had a very low certainty of disease were also treated. We came across this emergency and tried to do the best we could,” said Dr. Afeltra. A digital readout lateral flow trial (Sona Aspergillus Galactomannan LFA) for the quantification of galactomannan, a cell wall component of the Aspergillus genus, proved to be a useful tool for screening and diagnosing patients with probable pulmonary aspergillosis associated with COVID-19. The incidence of invasive mycosis was around 10% among 185 seriously ill COVID-19 patients, according to an Argentine multicenter prospective study in which Dr. Afeltra participated.

Scedosporium and Lomentospora. These genera are rarer septate hyaline fungi. Scedosporium is a complex of species. One species, S. apiospermum, can colonize pediatric patients with cystic fibrosis. Lomentospora prolificans is a multiresistant fungus. It produces pulmonary compromise or disseminated infection. The response to antifungal agents is variable, with a high minimum inhibitory concentration for amphotericin B and isavuconazole. Patients are usually treated with voriconazole alone or in combination with terbinafine or micafungin. Olorofim is emerging as a promising treatment.

Dr. Afeltra has received fees from Biotoscana, Gador, Pfizer, Merck, and Sandoz.

This article was translated from the Medscape Spanish edition, a version appeared on Medscape.com.

Climate change has affected the spread of West Nile fever. This observation was confirmed in an Italian Ministry of Health note reporting 94 confirmed cases of infection. Of those cases, 55 were neuroinvasive, 19 were from blood donors, 19 were associated with fever, and in one case, the patient was symptomatic. Seven deaths have occurred since the start of the summer season, particularly in northern Italy.

Entomologists and veterinarians have confirmed the presence of West Nile virus (WNV) in a pool of 100 mosquitoes, 15 birds from targeted species, and 10 wild birds from passive surveillance. Four cases have been reported in horses in which clinical symptoms were attributable to a WNV infection. No cases of infection with Usutu virus (USUV) have been registered in humans. USUV is a virus in the same family as WNV. It was first identified in South Africa in the 1950s and is capable of causing encephalitis. The viral genome has been detected in a pool of 33 mosquitoes and four birds.

Currently, the regions where the circulation of WNV has been confirmed are Emilia-Romagna, Veneto, Piedmont, Lombardy, Sardinia, and Friuli Venezia Giulia. To date, USUV has been detected in Le Marche, Lombardy, Umbria, Emilia Romagna, Friuli Venezia Giulia, Lazio, and Veneto.

Current climate conditions favor the reproduction of the vector (mosquitoes of the Culex genus) and the subsequent viral circulation among wildlife, the natural reservoir of the virus, and mammals (including humans). The 2022 epidemic season is peculiar in comparison with seasons from the past 3 years. Viral circulation has started early, and a greater number of cases have been observed in the avifauna and in the mosquito pool, and there has been an increase in the number of cases in humans.

For these reasons, and considering the significance of the infection for public health, it is necessary to put all useful measures in place to limit the risk of further transmission among humans and animals.

As specified on the Italian National Institute for Health website, West Nile fever is caused by the homonymous virus of the Flaviviridae family, which was isolated for the first time in Uganda in 1937. The virus has spread to almost all continents.

The virus reservoirs are wild birds and mosquitoes (more frequently of the Culex genus). Mosquito bites are the main means of transmission to humans. Other means of transmission, although very rare, are organ transplants, blood transfusions, and transmission from mother to fetus. West Nile fever cannot be transmitted from person to person. The virus infects other mammals, especially horses, and in some cases, dogs and rabbits.
 

Incubation and symptoms

The incubation period from the time of being bitten by an infected mosquito ranges from 2 to 14 days but can be up to 21 days in immunocompromised patients.

Most infected people do not show any symptoms. In around 20% of symptomatic cases, patients present with mild symptoms: fever, headache, nausea, vomiting, enlarged lymph nodes, and skin rashes. These symptoms may only last a few hours, but in rare cases, they may last a few weeks. Symptoms vary significantly, depending on the patient’s age. In children, a mild fever is most common, whereas in young people, symptoms are characterized by a fairly high fever, redness of the eyes, headache, and muscle pains. In the elderly and in debilitated patients, symptoms can be more severe.

The most serious symptoms are seen in fewer than 1% of infected patients (1 in 150 people) and include a high fever, a severe headache, muscle weakness, disorientation, tremors, visual disturbances, listlessness, and seizures, leading to paralysis and coma. Some neurologic effects may be permanent. In the most severe cases (around 1 in 1,000), the virus can cause terminal encephalitis.
 

Diagnosis

Diagnosis is mostly made through laboratory testing for IgM antibodies on serum and, where indicated, cerebrospinal fluid (CSF). Antibodies can persist beyond the patient’s period of illness (up to 1 year). Therefore, a positive result may indicate a previous infection. Samples collected within 8 days of the onset of symptoms may appear negative; it is therefore advisable to repeat the laboratory test further down the line before excluding the disease. Alternatively, diagnosis may be obtained through polymerase chain reaction or viral culture testing on samples of serum or CSF.
 

Prevention

A vaccine for West Nile fever does not exist. Prevention consists, above all, of reducing exposure to mosquito bites.

It is advisable that people protect themselves against bites and avoid places where mosquitoes can reproduce easily. The following are recommended:

• Using repellents and wearing of trousers and long-sleeve tops when out in the open, especially at dawn and sunset.
• Using mosquito nets on windows.
• Frequently emptying vases or other containers (for example, buckets) that contain stagnant water.
• Frequently changing the water in animal drinking bowls.
• Keeping child paddling pools in a vertical position when not in use.
• Using authorized repellents and insecticides where the vector may reproduce, such as in stables. For horses, a vaccine is available for veterinary use, which can further reduce the reservoir of viral circulation.

It is important that physicians inform patients in at-risk areas of the presence of this virus, the possible symptoms, and the preventive measures to adopt.
 

Therapy and treatment

There is no specific therapy for West Nile fever. In most cases, symptoms appear after a few days, but they can last for a few weeks. For the most severe cases, hospital admission is necessary; occasionally, treatment in the intensive care unit is necessary.

This article was translated from Univadis Italy. A version appeared on Medscape.com.

Climate change has affected the spread of West Nile fever. This observation was confirmed in an Italian Ministry of Health note reporting 94 confirmed cases of infection. Of those cases, 55 were neuroinvasive, 19 were from blood donors, 19 were associated with fever, and in one case, the patient was symptomatic. Seven deaths have occurred since the start of the summer season, particularly in northern Italy.

Entomologists and veterinarians have confirmed the presence of West Nile virus (WNV) in a pool of 100 mosquitoes, 15 birds from targeted species, and 10 wild birds from passive surveillance. Four cases have been reported in horses in which clinical symptoms were attributable to a WNV infection. No cases of infection with Usutu virus (USUV) have been registered in humans. USUV is a virus in the same family as WNV. It was first identified in South Africa in the 1950s and is capable of causing encephalitis. The viral genome has been detected in a pool of 33 mosquitoes and four birds.

Currently, the regions where the circulation of WNV has been confirmed are Emilia-Romagna, Veneto, Piedmont, Lombardy, Sardinia, and Friuli Venezia Giulia. To date, USUV has been detected in Le Marche, Lombardy, Umbria, Emilia Romagna, Friuli Venezia Giulia, Lazio, and Veneto.

Current climate conditions favor the reproduction of the vector (mosquitoes of the Culex genus) and the subsequent viral circulation among wildlife, the natural reservoir of the virus, and mammals (including humans). The 2022 epidemic season is peculiar in comparison with seasons from the past 3 years. Viral circulation has started early, and a greater number of cases have been observed in the avifauna and in the mosquito pool, and there has been an increase in the number of cases in humans.

For these reasons, and considering the significance of the infection for public health, it is necessary to put all useful measures in place to limit the risk of further transmission among humans and animals.

As specified on the Italian National Institute for Health website, West Nile fever is caused by the homonymous virus of the Flaviviridae family, which was isolated for the first time in Uganda in 1937. The virus has spread to almost all continents.

The virus reservoirs are wild birds and mosquitoes (more frequently of the Culex genus). Mosquito bites are the main means of transmission to humans. Other means of transmission, although very rare, are organ transplants, blood transfusions, and transmission from mother to fetus. West Nile fever cannot be transmitted from person to person. The virus infects other mammals, especially horses, and in some cases, dogs and rabbits.
 

Incubation and symptoms

The incubation period from the time of being bitten by an infected mosquito ranges from 2 to 14 days but can be up to 21 days in immunocompromised patients.

Most infected people do not show any symptoms. In around 20% of symptomatic cases, patients present with mild symptoms: fever, headache, nausea, vomiting, enlarged lymph nodes, and skin rashes. These symptoms may only last a few hours, but in rare cases, they may last a few weeks. Symptoms vary significantly, depending on the patient’s age. In children, a mild fever is most common, whereas in young people, symptoms are characterized by a fairly high fever, redness of the eyes, headache, and muscle pains. In the elderly and in debilitated patients, symptoms can be more severe.

The most serious symptoms are seen in fewer than 1% of infected patients (1 in 150 people) and include a high fever, a severe headache, muscle weakness, disorientation, tremors, visual disturbances, listlessness, and seizures, leading to paralysis and coma. Some neurologic effects may be permanent. In the most severe cases (around 1 in 1,000), the virus can cause terminal encephalitis.
 

Diagnosis

Diagnosis is mostly made through laboratory testing for IgM antibodies on serum and, where indicated, cerebrospinal fluid (CSF). Antibodies can persist beyond the patient’s period of illness (up to 1 year). Therefore, a positive result may indicate a previous infection. Samples collected within 8 days of the onset of symptoms may appear negative; it is therefore advisable to repeat the laboratory test further down the line before excluding the disease. Alternatively, diagnosis may be obtained through polymerase chain reaction or viral culture testing on samples of serum or CSF.
 

Prevention

A vaccine for West Nile fever does not exist. Prevention consists, above all, of reducing exposure to mosquito bites.

It is advisable that people protect themselves against bites and avoid places where mosquitoes can reproduce easily. The following are recommended:

• Using repellents and wearing of trousers and long-sleeve tops when out in the open, especially at dawn and sunset.
• Using mosquito nets on windows.
• Frequently emptying vases or other containers (for example, buckets) that contain stagnant water.
• Frequently changing the water in animal drinking bowls.
• Keeping child paddling pools in a vertical position when not in use.
• Using authorized repellents and insecticides where the vector may reproduce, such as in stables. For horses, a vaccine is available for veterinary use, which can further reduce the reservoir of viral circulation.

It is important that physicians inform patients in at-risk areas of the presence of this virus, the possible symptoms, and the preventive measures to adopt.
 

Therapy and treatment

There is no specific therapy for West Nile fever. In most cases, symptoms appear after a few days, but they can last for a few weeks. For the most severe cases, hospital admission is necessary; occasionally, treatment in the intensive care unit is necessary.

This article was translated from Univadis Italy. A version appeared on Medscape.com.

Climate change has affected the spread of West Nile fever. This observation was confirmed in an Italian Ministry of Health note reporting 94 confirmed cases of infection. Of those cases, 55 were neuroinvasive, 19 were from blood donors, 19 were associated with fever, and in one case, the patient was symptomatic. Seven deaths have occurred since the start of the summer season, particularly in northern Italy.

Entomologists and veterinarians have confirmed the presence of West Nile virus (WNV) in a pool of 100 mosquitoes, 15 birds from targeted species, and 10 wild birds from passive surveillance. Four cases have been reported in horses in which clinical symptoms were attributable to a WNV infection. No cases of infection with Usutu virus (USUV) have been registered in humans. USUV is a virus in the same family as WNV. It was first identified in South Africa in the 1950s and is capable of causing encephalitis. The viral genome has been detected in a pool of 33 mosquitoes and four birds.

Currently, the regions where the circulation of WNV has been confirmed are Emilia-Romagna, Veneto, Piedmont, Lombardy, Sardinia, and Friuli Venezia Giulia. To date, USUV has been detected in Le Marche, Lombardy, Umbria, Emilia Romagna, Friuli Venezia Giulia, Lazio, and Veneto.

Current climate conditions favor the reproduction of the vector (mosquitoes of the Culex genus) and the subsequent viral circulation among wildlife, the natural reservoir of the virus, and mammals (including humans). The 2022 epidemic season is peculiar in comparison with seasons from the past 3 years. Viral circulation has started early, and a greater number of cases have been observed in the avifauna and in the mosquito pool, and there has been an increase in the number of cases in humans.

For these reasons, and considering the significance of the infection for public health, it is necessary to put all useful measures in place to limit the risk of further transmission among humans and animals.

As specified on the Italian National Institute for Health website, West Nile fever is caused by the homonymous virus of the Flaviviridae family, which was isolated for the first time in Uganda in 1937. The virus has spread to almost all continents.

The virus reservoirs are wild birds and mosquitoes (more frequently of the Culex genus). Mosquito bites are the main means of transmission to humans. Other means of transmission, although very rare, are organ transplants, blood transfusions, and transmission from mother to fetus. West Nile fever cannot be transmitted from person to person. The virus infects other mammals, especially horses, and in some cases, dogs and rabbits.
 

Incubation and symptoms

The incubation period from the time of being bitten by an infected mosquito ranges from 2 to 14 days but can be up to 21 days in immunocompromised patients.

Most infected people do not show any symptoms. In around 20% of symptomatic cases, patients present with mild symptoms: fever, headache, nausea, vomiting, enlarged lymph nodes, and skin rashes. These symptoms may only last a few hours, but in rare cases, they may last a few weeks. Symptoms vary significantly, depending on the patient’s age. In children, a mild fever is most common, whereas in young people, symptoms are characterized by a fairly high fever, redness of the eyes, headache, and muscle pains. In the elderly and in debilitated patients, symptoms can be more severe.

The most serious symptoms are seen in fewer than 1% of infected patients (1 in 150 people) and include a high fever, a severe headache, muscle weakness, disorientation, tremors, visual disturbances, listlessness, and seizures, leading to paralysis and coma. Some neurologic effects may be permanent. In the most severe cases (around 1 in 1,000), the virus can cause terminal encephalitis.
 

Diagnosis

Diagnosis is mostly made through laboratory testing for IgM antibodies on serum and, where indicated, cerebrospinal fluid (CSF). Antibodies can persist beyond the patient’s period of illness (up to 1 year). Therefore, a positive result may indicate a previous infection. Samples collected within 8 days of the onset of symptoms may appear negative; it is therefore advisable to repeat the laboratory test further down the line before excluding the disease. Alternatively, diagnosis may be obtained through polymerase chain reaction or viral culture testing on samples of serum or CSF.
 

Prevention

A vaccine for West Nile fever does not exist. Prevention consists, above all, of reducing exposure to mosquito bites.

It is advisable that people protect themselves against bites and avoid places where mosquitoes can reproduce easily. The following are recommended:

• Using repellents and wearing of trousers and long-sleeve tops when out in the open, especially at dawn and sunset.
• Using mosquito nets on windows.
• Frequently emptying vases or other containers (for example, buckets) that contain stagnant water.
• Frequently changing the water in animal drinking bowls.
• Keeping child paddling pools in a vertical position when not in use.
• Using authorized repellents and insecticides where the vector may reproduce, such as in stables. For horses, a vaccine is available for veterinary use, which can further reduce the reservoir of viral circulation.

It is important that physicians inform patients in at-risk areas of the presence of this virus, the possible symptoms, and the preventive measures to adopt.
 

Therapy and treatment

There is no specific therapy for West Nile fever. In most cases, symptoms appear after a few days, but they can last for a few weeks. For the most severe cases, hospital admission is necessary; occasionally, treatment in the intensive care unit is necessary.

This article was translated from Univadis Italy. A version appeared on Medscape.com.

Between 2018 and August 2022, Chinese researchers identified 35 people infected with a new animal virus in eastern China. These cases were reported in The New England Journal of Medicine. When asked by Nature about this emerging virus that has until now flown under the radar, scientists said that they were not overly concerned because the virus doesn’t seem to spread easily between people nor is it fatal.

Researchers think that the virus is carried by shrews. It might have infected people directly or through an intermediate animal.
 

First identified in Langya

The authors describe 35 cases of infection with a virus called Langya henipavirus (LayV) since 2018. It is closely related to two other henipaviruses known to infect people – Hendra virus and Nipah virus. The virus was named Langya after the town in Shandong province in China where the first patient identified with the disease was from, explained coauthor Linfa Wang, PhD, a virologist at Duke-NUS Medical School, Singapore.

Langya can cause respiratory symptoms such as fever, cough, and fatigue. Hendra virus and Nipah virus also cause respiratory infections and can be fatal, the article in Nature reports.
 

Hendra and Nipah

According to the World Health Organization, Nipah virus, which was discovered in 1999, is a new virus responsible for a zoonosis that causes the disease in animals and humans who have had contact with infected animals. Its name comes from the location where it was first identified in Malaysia. Patients may have asymptomatic infection or symptoms such as acute respiratory infection and severe encephalitis. The case fatality rate is between 40% and 75%.

Nipah virus is closely related to another recently discovered (1994) zoonotic virus called Hendra virus, which is named after the Australian city in which it first appeared. On that day in July 2016, 53 cases were identified involving 70 horses. These incidents remained confined to the northeastern coast of Australia.

Nipah virus and Hendra virus belong to the Paramyxoviridae family. “While the members of this group of viruses are only responsible for a few limited outbreaks, the ability of these viruses to infect a wide range of hosts and cause a disease leading to high fatalities in humans has made them a public health concern,” stated the WHO.
 

Related to measles

The research team identified LayV while monitoring patients at three hospitals in the eastern Chinese provinces of Shandong and Henan between April 2018 and August 2021. Throughout the study period, the researchers found 35 people infected with LayV, mostly farmers, with symptoms ranging from a cough to severe pneumonia. Participants were recruited into the study if they had a fever. The team sequenced the LayV genome from a throat swab taken from the first patient identified with the disease, a 53-year-old woman.

The LayV genome showed that the virus is most closely related to Mojiang henipavirus, which was first isolated in rats in an abandoned mine in the southern Chinese province of Yunnan in 2012. Henipaviruses belong to the Paramyxoviridae family of viruses, which includes measles, mumps, and many respiratory viruses that infect humans. Several other henipaviruses have been discovered in bats, rats, and shrews from Australia to South Korea and China, but only Hendra, Nipah, and now LayV are known to infect people, according to Nature.
 

Animal origin likely

Because most patients stated in a questionnaire that they had been exposed to an animal during the month preceding the onset of their symptoms, the researchers tested goats, dogs, pigs, and cattle living in the villages of infected patients for antibodies against LayV. They found LayV antibodies in a handful of goats and dogs and identified LayV viral RNA in 27% of the 262 sampled shrews. These findings suggest that the shrew may be a natural reservoir of LayV, passing it between themselves “and somehow infecting people here and there by chance,” Emily Gurley, PhD, MPH, an infectious diseases epidemiologist at Johns Hopkins University, Baltimore, told Nature.

The researchers did not find strong evidence of LayV spreading between the people included in the study. There were no clusters of cases in the same family, within a short time span, or in close geographical proximity. “Of the 35 cases, not a single one is linked,” said Dr. Wang, which Dr. Gurley considered good news. It should be noted, however ,”that the study did retrospective contact tracing on only 15 family members of nine infected individuals, which makes it difficult to determine how exactly the individuals were exposed,” reported Nature.
 

Vigilance is needed

Should we be worried about a potential new epidemic? The replies from two experts interviewed by Nature were reassuring. “There is no particular need to worry about this virus, but ongoing surveillance is critical,” said Professor Edward Holmes, an evolutionary virologist at the University of Sydney. Regularly testing people and animals for emerging viruses is important to understand the risk for zoonotic diseases – those that can be transmitted from other animals to humans, he said.

It is still not clear how people were infected in the first place – whether directly from shrews or an intermediate animal, said Dr. Gurley. That’s why a lot of research still needs to be done to work out how the virus is spreading in shrews and how people are getting infected, she added.

Nevertheless, Dr. Gurley finds that large outbreaks of infectious diseases typically take off after a lot of false starts. “If we are actively looking for those sparks, then we are in a much better position to stop or to find something early.” Still, she noted that she didn’t see anything in the data to “cause alarm from a pandemic-threat perspective.”

Though there is not currently any cause for worry of a new pandemic, vigilance is crucial. Professor Holmes says there is an urgent need for a global surveillance system to detect virus spillovers and rapidly communicate those results to avoid more pandemics, such as the one sparked by COVID-19. “These sorts of zoonotic spillover events happen all the time,” he said. “The world needs to wake up.”

This article was translated from the Medscape French edition. A version appeared on Medscape.com.

Between 2018 and August 2022, Chinese researchers identified 35 people infected with a new animal virus in eastern China. These cases were reported in The New England Journal of Medicine. When asked by Nature about this emerging virus that has until now flown under the radar, scientists said that they were not overly concerned because the virus doesn’t seem to spread easily between people nor is it fatal.

Researchers think that the virus is carried by shrews. It might have infected people directly or through an intermediate animal.
 

First identified in Langya

The authors describe 35 cases of infection with a virus called Langya henipavirus (LayV) since 2018. It is closely related to two other henipaviruses known to infect people – Hendra virus and Nipah virus. The virus was named Langya after the town in Shandong province in China where the first patient identified with the disease was from, explained coauthor Linfa Wang, PhD, a virologist at Duke-NUS Medical School, Singapore.

Langya can cause respiratory symptoms such as fever, cough, and fatigue. Hendra virus and Nipah virus also cause respiratory infections and can be fatal, the article in Nature reports.
 

Hendra and Nipah

According to the World Health Organization, Nipah virus, which was discovered in 1999, is a new virus responsible for a zoonosis that causes the disease in animals and humans who have had contact with infected animals. Its name comes from the location where it was first identified in Malaysia. Patients may have asymptomatic infection or symptoms such as acute respiratory infection and severe encephalitis. The case fatality rate is between 40% and 75%.

Nipah virus is closely related to another recently discovered (1994) zoonotic virus called Hendra virus, which is named after the Australian city in which it first appeared. On that day in July 2016, 53 cases were identified involving 70 horses. These incidents remained confined to the northeastern coast of Australia.

Nipah virus and Hendra virus belong to the Paramyxoviridae family. “While the members of this group of viruses are only responsible for a few limited outbreaks, the ability of these viruses to infect a wide range of hosts and cause a disease leading to high fatalities in humans has made them a public health concern,” stated the WHO.
 

Related to measles

The research team identified LayV while monitoring patients at three hospitals in the eastern Chinese provinces of Shandong and Henan between April 2018 and August 2021. Throughout the study period, the researchers found 35 people infected with LayV, mostly farmers, with symptoms ranging from a cough to severe pneumonia. Participants were recruited into the study if they had a fever. The team sequenced the LayV genome from a throat swab taken from the first patient identified with the disease, a 53-year-old woman.

The LayV genome showed that the virus is most closely related to Mojiang henipavirus, which was first isolated in rats in an abandoned mine in the southern Chinese province of Yunnan in 2012. Henipaviruses belong to the Paramyxoviridae family of viruses, which includes measles, mumps, and many respiratory viruses that infect humans. Several other henipaviruses have been discovered in bats, rats, and shrews from Australia to South Korea and China, but only Hendra, Nipah, and now LayV are known to infect people, according to Nature.
 

Animal origin likely

Because most patients stated in a questionnaire that they had been exposed to an animal during the month preceding the onset of their symptoms, the researchers tested goats, dogs, pigs, and cattle living in the villages of infected patients for antibodies against LayV. They found LayV antibodies in a handful of goats and dogs and identified LayV viral RNA in 27% of the 262 sampled shrews. These findings suggest that the shrew may be a natural reservoir of LayV, passing it between themselves “and somehow infecting people here and there by chance,” Emily Gurley, PhD, MPH, an infectious diseases epidemiologist at Johns Hopkins University, Baltimore, told Nature.

The researchers did not find strong evidence of LayV spreading between the people included in the study. There were no clusters of cases in the same family, within a short time span, or in close geographical proximity. “Of the 35 cases, not a single one is linked,” said Dr. Wang, which Dr. Gurley considered good news. It should be noted, however ,”that the study did retrospective contact tracing on only 15 family members of nine infected individuals, which makes it difficult to determine how exactly the individuals were exposed,” reported Nature.
 

Vigilance is needed

Should we be worried about a potential new epidemic? The replies from two experts interviewed by Nature were reassuring. “There is no particular need to worry about this virus, but ongoing surveillance is critical,” said Professor Edward Holmes, an evolutionary virologist at the University of Sydney. Regularly testing people and animals for emerging viruses is important to understand the risk for zoonotic diseases – those that can be transmitted from other animals to humans, he said.

It is still not clear how people were infected in the first place – whether directly from shrews or an intermediate animal, said Dr. Gurley. That’s why a lot of research still needs to be done to work out how the virus is spreading in shrews and how people are getting infected, she added.

Nevertheless, Dr. Gurley finds that large outbreaks of infectious diseases typically take off after a lot of false starts. “If we are actively looking for those sparks, then we are in a much better position to stop or to find something early.” Still, she noted that she didn’t see anything in the data to “cause alarm from a pandemic-threat perspective.”

Though there is not currently any cause for worry of a new pandemic, vigilance is crucial. Professor Holmes says there is an urgent need for a global surveillance system to detect virus spillovers and rapidly communicate those results to avoid more pandemics, such as the one sparked by COVID-19. “These sorts of zoonotic spillover events happen all the time,” he said. “The world needs to wake up.”

This article was translated from the Medscape French edition. A version appeared on Medscape.com.

Between 2018 and August 2022, Chinese researchers identified 35 people infected with a new animal virus in eastern China. These cases were reported in The New England Journal of Medicine. When asked by Nature about this emerging virus that has until now flown under the radar, scientists said that they were not overly concerned because the virus doesn’t seem to spread easily between people nor is it fatal.

Researchers think that the virus is carried by shrews. It might have infected people directly or through an intermediate animal.
 

First identified in Langya

The authors describe 35 cases of infection with a virus called Langya henipavirus (LayV) since 2018. It is closely related to two other henipaviruses known to infect people – Hendra virus and Nipah virus. The virus was named Langya after the town in Shandong province in China where the first patient identified with the disease was from, explained coauthor Linfa Wang, PhD, a virologist at Duke-NUS Medical School, Singapore.

Langya can cause respiratory symptoms such as fever, cough, and fatigue. Hendra virus and Nipah virus also cause respiratory infections and can be fatal, the article in Nature reports.
 

Hendra and Nipah

According to the World Health Organization, Nipah virus, which was discovered in 1999, is a new virus responsible for a zoonosis that causes the disease in animals and humans who have had contact with infected animals. Its name comes from the location where it was first identified in Malaysia. Patients may have asymptomatic infection or symptoms such as acute respiratory infection and severe encephalitis. The case fatality rate is between 40% and 75%.

Nipah virus is closely related to another recently discovered (1994) zoonotic virus called Hendra virus, which is named after the Australian city in which it first appeared. On that day in July 2016, 53 cases were identified involving 70 horses. These incidents remained confined to the northeastern coast of Australia.

Nipah virus and Hendra virus belong to the Paramyxoviridae family. “While the members of this group of viruses are only responsible for a few limited outbreaks, the ability of these viruses to infect a wide range of hosts and cause a disease leading to high fatalities in humans has made them a public health concern,” stated the WHO.
 

Related to measles

The research team identified LayV while monitoring patients at three hospitals in the eastern Chinese provinces of Shandong and Henan between April 2018 and August 2021. Throughout the study period, the researchers found 35 people infected with LayV, mostly farmers, with symptoms ranging from a cough to severe pneumonia. Participants were recruited into the study if they had a fever. The team sequenced the LayV genome from a throat swab taken from the first patient identified with the disease, a 53-year-old woman.

The LayV genome showed that the virus is most closely related to Mojiang henipavirus, which was first isolated in rats in an abandoned mine in the southern Chinese province of Yunnan in 2012. Henipaviruses belong to the Paramyxoviridae family of viruses, which includes measles, mumps, and many respiratory viruses that infect humans. Several other henipaviruses have been discovered in bats, rats, and shrews from Australia to South Korea and China, but only Hendra, Nipah, and now LayV are known to infect people, according to Nature.
 

Animal origin likely

Because most patients stated in a questionnaire that they had been exposed to an animal during the month preceding the onset of their symptoms, the researchers tested goats, dogs, pigs, and cattle living in the villages of infected patients for antibodies against LayV. They found LayV antibodies in a handful of goats and dogs and identified LayV viral RNA in 27% of the 262 sampled shrews. These findings suggest that the shrew may be a natural reservoir of LayV, passing it between themselves “and somehow infecting people here and there by chance,” Emily Gurley, PhD, MPH, an infectious diseases epidemiologist at Johns Hopkins University, Baltimore, told Nature.

The researchers did not find strong evidence of LayV spreading between the people included in the study. There were no clusters of cases in the same family, within a short time span, or in close geographical proximity. “Of the 35 cases, not a single one is linked,” said Dr. Wang, which Dr. Gurley considered good news. It should be noted, however ,”that the study did retrospective contact tracing on only 15 family members of nine infected individuals, which makes it difficult to determine how exactly the individuals were exposed,” reported Nature.
 

Vigilance is needed

Should we be worried about a potential new epidemic? The replies from two experts interviewed by Nature were reassuring. “There is no particular need to worry about this virus, but ongoing surveillance is critical,” said Professor Edward Holmes, an evolutionary virologist at the University of Sydney. Regularly testing people and animals for emerging viruses is important to understand the risk for zoonotic diseases – those that can be transmitted from other animals to humans, he said.

It is still not clear how people were infected in the first place – whether directly from shrews or an intermediate animal, said Dr. Gurley. That’s why a lot of research still needs to be done to work out how the virus is spreading in shrews and how people are getting infected, she added.

Nevertheless, Dr. Gurley finds that large outbreaks of infectious diseases typically take off after a lot of false starts. “If we are actively looking for those sparks, then we are in a much better position to stop or to find something early.” Still, she noted that she didn’t see anything in the data to “cause alarm from a pandemic-threat perspective.”

Though there is not currently any cause for worry of a new pandemic, vigilance is crucial. Professor Holmes says there is an urgent need for a global surveillance system to detect virus spillovers and rapidly communicate those results to avoid more pandemics, such as the one sparked by COVID-19. “These sorts of zoonotic spillover events happen all the time,” he said. “The world needs to wake up.”

This article was translated from the Medscape French edition. A version appeared on Medscape.com.

Monkeypox. Polio. Covid. A quick glance at the news on any given day seems to indicate that outbreaks, epidemics, and perhaps even pandemics are increasing in frequency.

Granted, these types of events are hardly new; from the plagues of the 5th and 13th centuries to the Spanish flu in the 20th century and SARS-CoV-2 today, they’ve been with us from time immemorial. 

What appears to be different, however, is not their frequency, but their intensity, with research reinforcing that we may be facing unique challenges and smaller windows to intervene as we move forward.

Findings from a modeling study, published in 2021 in Proceedings of the National Academy of Sciences, underscore that without effective intervention, the probability of extreme events like COVID-19 will likely increase threefold in the coming decades.

“The fact is, pandemic preparedness is not something that people have valued or thought of as important, or paid much attention to,” Amesh Adalja, MD, senior scholar, Johns Hopkins Center for Health Security, Baltimore, told this news organization.

“It’s all been based on some unusual cluster of cases that were causing severe disease and overwhelming local authorities. So often, like Indiana Jones, somebody got dispatched to deal with an outbreak,” Dr. Adalja said.

In a perfect post-COVID world, government bodies, scientists, clinicians, and others would cross silos to coordinate pandemic prevention, not just preparedness. The public would trust those who carry the title “public health” in their daily responsibilities, and in turn, public health experts would get back to their core responsibility – infectious disease preparedness – the role they were initially assigned following Europe’s Black Death during the 14th century. Instead, the world finds itself at a crossroads, with emerging and reemerging infectious disease outbreaks that on the surface appear to arise haphazardly but in reality are the result of decades of reaction and containment policies aimed at putting out fires, not addressing their cause.

Dr. Adalja noted that only when the threat of biological weapons became a reality in the mid-2000s was there a realization that economies of scale could be exploited by merging interests and efforts to develop health security medical countermeasures. For example, it encouraged governments to more closely integrate agencies like the Biomedical Advanced Research and Development Authority and infectious disease research organizations and individuals.

Still, while significant strides have been made in certain areas, the ongoing COVID-19 pandemic has revealed substantial weaknesses remaining in public and private health systems, as well as major gaps in infectious disease preparedness.
 

The role of spillover events

No matter whom you ask, scientists, public health and conservation experts, and infectious disease clinicians all point to one of the most important threats to human health. As Walt Kelly’s Pogo famously put it, “We have met the enemy, and he is us.”

“The reason why these outbreaks of novel infectious diseases are increasingly occurring is because of human-driven environmental change, particularly land use, unsafe practices when raising farmed animals, and commercial wildlife markets,” Neil M. Vora, MD, a physician specializing in pandemic prevention at Conservation International and a former Centers for Disease Control and Prevention epidemic intelligence officer, said in an interview.

In fact, more than 60% of emerging infections and diseases are due to these “spillover events” (zoonotic spillover) that occur when pathogens that commonly circulate in wildlife jump over to new, human hosts.

Several examples come to mind.

COVID-19 may have begun as an enzootic virus from two undetermined animals, using the Huanan Seafood Market as a possible intermediate reservoir, according to a July 26 preprint in the journal Science. 

Likewise, while the Ebola virus was originally attributed to deforestation efforts to create palm oil (which allowed fruit bat carriers to transfer the virus to humans), recent research suggests that bats dwelling in the walls of human dwellings and hospitals are responsible for the 2018 outbreak in the Democratic Republic of Congo. 

(Incidentally, just this week, a new Ebola case was confirmed in Eastern Congo, and it has been genetically linked to the previous outbreak, despite that outbreak having been declared over in early July.)

“When we clear forests, we create opportunities for humans to live alongside the forest edge and displace wildlife. There’s evidence that shows when [these] biodiverse areas are cleared, specialist species that evolved to live in the forests first start to disappear, whereas generalist species – rodents and bats – continue to survive and are able to carry pathogens that can be passed on to humans,” Dr. Vora explained.

So far, China’s outbreak of the novel Langya henipavirus is believed to have spread (either directly or indirectly) by rodents and shrews, according to reports from public health authorities like the European Centre for Disease Prevention and Control, which is currently monitoring the situation. 

Yet, an overreliance on surveillance and containment only perpetuates what Dr. Vora says are cycles of panic and neglect.

“We saw it with Ebola in 2015, in 2016 to 2017 with Zika, you see it with tuberculosis, with sexually transmitted infections, and with COVID. You have policymakers working on solutions, and once they think that they’ve fixed the problem, they’re going to move on to the next crisis.”

It’s also a question of equity.

Reports detailing the reemergence of monkeypox in Nigeria in 2017 were largely ignored, despite the fact that the United States assisted in diagnosing an early case in an 11-year-old boy. At the time, it was clear that the virus was spreading by human-to-human transmission versus animal-to-human transmission, something that had not been seen previously. 

“The current model [is] waiting for pathogens to spill over and then [continuing] to spread signals that rich countries are tolerant of these outbreaks so long as they don’t grow into epidemics or pandemics,” Dr. Vora said.

This model is clearly broken; roughly 5 years after Nigeria reported the resurgence of monkeypox, the United States has more than 14,000 confirmed cases, which represents more than a quarter of the total number of cases reported worldwide. 
 

Public health on the brink

I’s difficult to imagine a future without outbreaks and more pandemics, and if experts are to be believed, we are ill-prepared. 

“I think that we are in a situation where this is a major threat, and people have become complacent about it,” said Dr. Adalja, who noted that we should be asking ourselves if the “government is actually in a position to be able to respond in a way that we need them to or is [that response] tied up in bureaucracy and inefficiency?”

COVID-19 should have been seen as a wake-up call, and many of those deaths were preventable. “With monkeypox, they’re faltering; it should have been a layup, not a disaster,” he emphasized.

Ellen Eaton, MD, associate professor of infectious diseases at the University of Alabama at Birmingham, also pointed to the reality that by the time COVID-19 reached North America, the United States had already moved away from the model of the public health department as the epicenter of knowledge, education, awareness, and, ironically, public health.

“Thinking about my community, very few people knew the face and name of our local and state health officers,” she told this news organization.  

“There was just this inherent mistrust of these people. If you add in a lot of talking heads, a lot of politicians and messaging from non-experts that countered what was coming out of our public health agencies early, you had this huge disconnect; in the South, it was the perfect storm for vaccine hesitancy.”

At last count, this perfect storm has led to 1.46 million COVID cases and just over 20,000 deaths – many of which were preventable – in Alabama alone. 

“In certain parts of America, we were starting with a broken system with limited resources and few providers,” Dr. Eaton explained.

Dr. Eaton said that a lot of fields, not just medicine and public health, have finite resources that have been stretched to capacity by COVID, and now monkeypox, and wondered what was next as we’re headed into autumn and influenza season. But she also mentioned the tremendous implications of climate change on infectious diseases and community health and wellness.

“There’s a tremendous need to have the ability to survey not just humans but also how the disease burden in our environment that is fluctuating with climate change is going to impact communities in really important ways,” Dr. Eaton said. 
 

Upstream prevention

Dr. Vora said he could not agree more and believes that upstream prevention holds the key. 

“We have to make sure while there’s tension on this issue that the right solutions are implemented,” he said. 

In coming years, postspillover containment strategies – vaccine research and development and strengthening health care surveillance, for example – are likely to become inadequate.

“We saw it with COVID and we are seeing it again with monkeypox,” Dr. Vora said. “We also have to invest further upstream to prevent spillovers in the first place, for example, by addressing deforestation, commercial wildlife markets and trade, [and] infection control when raising farm animals.”

“The thing is, when you invest in those upstream solutions, you are also mitigating climate change and loss of biodiversity. I’m not saying that we should not invest in postspillover containment efforts; we’re never going to contain every spillover. But we also have to invest in prevention,” he added.

In a piece published in Nature, Dr. Vora and his coauthors acknowledge that several international bodies such as the World Health Organization and G7 have invested in initiatives to facilitate coordinated, global responses to climate change, pandemic preparedness, and response. But they point out that these efforts fail to “explicitly address the negative feedback cycle between environmental degradation, wildlife exploitation, and the emergence of pathogens.”

“Environmental conservation is no longer a left-wing fringe issue, it’s moving into public consciousness, and ... it is public health,” Dr. Vora said. “When we destroy nature, we’re destroying our own ability to survive.”

Dr. Adalja, Dr. Vora, and Dr. Eaton report no relevant financial relationships.

A version of this article first appeared on Medscape.com.

Monkeypox. Polio. Covid. A quick glance at the news on any given day seems to indicate that outbreaks, epidemics, and perhaps even pandemics are increasing in frequency.

Granted, these types of events are hardly new; from the plagues of the 5th and 13th centuries to the Spanish flu in the 20th century and SARS-CoV-2 today, they’ve been with us from time immemorial. 

What appears to be different, however, is not their frequency, but their intensity, with research reinforcing that we may be facing unique challenges and smaller windows to intervene as we move forward.

Findings from a modeling study, published in 2021 in Proceedings of the National Academy of Sciences, underscore that without effective intervention, the probability of extreme events like COVID-19 will likely increase threefold in the coming decades.

“The fact is, pandemic preparedness is not something that people have valued or thought of as important, or paid much attention to,” Amesh Adalja, MD, senior scholar, Johns Hopkins Center for Health Security, Baltimore, told this news organization.

“It’s all been based on some unusual cluster of cases that were causing severe disease and overwhelming local authorities. So often, like Indiana Jones, somebody got dispatched to deal with an outbreak,” Dr. Adalja said.

In a perfect post-COVID world, government bodies, scientists, clinicians, and others would cross silos to coordinate pandemic prevention, not just preparedness. The public would trust those who carry the title “public health” in their daily responsibilities, and in turn, public health experts would get back to their core responsibility – infectious disease preparedness – the role they were initially assigned following Europe’s Black Death during the 14th century. Instead, the world finds itself at a crossroads, with emerging and reemerging infectious disease outbreaks that on the surface appear to arise haphazardly but in reality are the result of decades of reaction and containment policies aimed at putting out fires, not addressing their cause.

Dr. Adalja noted that only when the threat of biological weapons became a reality in the mid-2000s was there a realization that economies of scale could be exploited by merging interests and efforts to develop health security medical countermeasures. For example, it encouraged governments to more closely integrate agencies like the Biomedical Advanced Research and Development Authority and infectious disease research organizations and individuals.

Still, while significant strides have been made in certain areas, the ongoing COVID-19 pandemic has revealed substantial weaknesses remaining in public and private health systems, as well as major gaps in infectious disease preparedness.
 

The role of spillover events

No matter whom you ask, scientists, public health and conservation experts, and infectious disease clinicians all point to one of the most important threats to human health. As Walt Kelly’s Pogo famously put it, “We have met the enemy, and he is us.”

“The reason why these outbreaks of novel infectious diseases are increasingly occurring is because of human-driven environmental change, particularly land use, unsafe practices when raising farmed animals, and commercial wildlife markets,” Neil M. Vora, MD, a physician specializing in pandemic prevention at Conservation International and a former Centers for Disease Control and Prevention epidemic intelligence officer, said in an interview.

In fact, more than 60% of emerging infections and diseases are due to these “spillover events” (zoonotic spillover) that occur when pathogens that commonly circulate in wildlife jump over to new, human hosts.

Several examples come to mind.

COVID-19 may have begun as an enzootic virus from two undetermined animals, using the Huanan Seafood Market as a possible intermediate reservoir, according to a July 26 preprint in the journal Science. 

Likewise, while the Ebola virus was originally attributed to deforestation efforts to create palm oil (which allowed fruit bat carriers to transfer the virus to humans), recent research suggests that bats dwelling in the walls of human dwellings and hospitals are responsible for the 2018 outbreak in the Democratic Republic of Congo. 

(Incidentally, just this week, a new Ebola case was confirmed in Eastern Congo, and it has been genetically linked to the previous outbreak, despite that outbreak having been declared over in early July.)

“When we clear forests, we create opportunities for humans to live alongside the forest edge and displace wildlife. There’s evidence that shows when [these] biodiverse areas are cleared, specialist species that evolved to live in the forests first start to disappear, whereas generalist species – rodents and bats – continue to survive and are able to carry pathogens that can be passed on to humans,” Dr. Vora explained.

So far, China’s outbreak of the novel Langya henipavirus is believed to have spread (either directly or indirectly) by rodents and shrews, according to reports from public health authorities like the European Centre for Disease Prevention and Control, which is currently monitoring the situation. 

Yet, an overreliance on surveillance and containment only perpetuates what Dr. Vora says are cycles of panic and neglect.

“We saw it with Ebola in 2015, in 2016 to 2017 with Zika, you see it with tuberculosis, with sexually transmitted infections, and with COVID. You have policymakers working on solutions, and once they think that they’ve fixed the problem, they’re going to move on to the next crisis.”

It’s also a question of equity.

Reports detailing the reemergence of monkeypox in Nigeria in 2017 were largely ignored, despite the fact that the United States assisted in diagnosing an early case in an 11-year-old boy. At the time, it was clear that the virus was spreading by human-to-human transmission versus animal-to-human transmission, something that had not been seen previously. 

“The current model [is] waiting for pathogens to spill over and then [continuing] to spread signals that rich countries are tolerant of these outbreaks so long as they don’t grow into epidemics or pandemics,” Dr. Vora said.

This model is clearly broken; roughly 5 years after Nigeria reported the resurgence of monkeypox, the United States has more than 14,000 confirmed cases, which represents more than a quarter of the total number of cases reported worldwide. 
 

Public health on the brink

I’s difficult to imagine a future without outbreaks and more pandemics, and if experts are to be believed, we are ill-prepared. 

“I think that we are in a situation where this is a major threat, and people have become complacent about it,” said Dr. Adalja, who noted that we should be asking ourselves if the “government is actually in a position to be able to respond in a way that we need them to or is [that response] tied up in bureaucracy and inefficiency?”

COVID-19 should have been seen as a wake-up call, and many of those deaths were preventable. “With monkeypox, they’re faltering; it should have been a layup, not a disaster,” he emphasized.

Ellen Eaton, MD, associate professor of infectious diseases at the University of Alabama at Birmingham, also pointed to the reality that by the time COVID-19 reached North America, the United States had already moved away from the model of the public health department as the epicenter of knowledge, education, awareness, and, ironically, public health.

“Thinking about my community, very few people knew the face and name of our local and state health officers,” she told this news organization.  

“There was just this inherent mistrust of these people. If you add in a lot of talking heads, a lot of politicians and messaging from non-experts that countered what was coming out of our public health agencies early, you had this huge disconnect; in the South, it was the perfect storm for vaccine hesitancy.”

At last count, this perfect storm has led to 1.46 million COVID cases and just over 20,000 deaths – many of which were preventable – in Alabama alone. 

“In certain parts of America, we were starting with a broken system with limited resources and few providers,” Dr. Eaton explained.

Dr. Eaton said that a lot of fields, not just medicine and public health, have finite resources that have been stretched to capacity by COVID, and now monkeypox, and wondered what was next as we’re headed into autumn and influenza season. But she also mentioned the tremendous implications of climate change on infectious diseases and community health and wellness.

“There’s a tremendous need to have the ability to survey not just humans but also how the disease burden in our environment that is fluctuating with climate change is going to impact communities in really important ways,” Dr. Eaton said. 
 

Upstream prevention

Dr. Vora said he could not agree more and believes that upstream prevention holds the key. 

“We have to make sure while there’s tension on this issue that the right solutions are implemented,” he said. 

In coming years, postspillover containment strategies – vaccine research and development and strengthening health care surveillance, for example – are likely to become inadequate.

“We saw it with COVID and we are seeing it again with monkeypox,” Dr. Vora said. “We also have to invest further upstream to prevent spillovers in the first place, for example, by addressing deforestation, commercial wildlife markets and trade, [and] infection control when raising farm animals.”

“The thing is, when you invest in those upstream solutions, you are also mitigating climate change and loss of biodiversity. I’m not saying that we should not invest in postspillover containment efforts; we’re never going to contain every spillover. But we also have to invest in prevention,” he added.

In a piece published in Nature, Dr. Vora and his coauthors acknowledge that several international bodies such as the World Health Organization and G7 have invested in initiatives to facilitate coordinated, global responses to climate change, pandemic preparedness, and response. But they point out that these efforts fail to “explicitly address the negative feedback cycle between environmental degradation, wildlife exploitation, and the emergence of pathogens.”

“Environmental conservation is no longer a left-wing fringe issue, it’s moving into public consciousness, and ... it is public health,” Dr. Vora said. “When we destroy nature, we’re destroying our own ability to survive.”

Dr. Adalja, Dr. Vora, and Dr. Eaton report no relevant financial relationships.

A version of this article first appeared on Medscape.com.

Monkeypox. Polio. Covid. A quick glance at the news on any given day seems to indicate that outbreaks, epidemics, and perhaps even pandemics are increasing in frequency.

Granted, these types of events are hardly new; from the plagues of the 5th and 13th centuries to the Spanish flu in the 20th century and SARS-CoV-2 today, they’ve been with us from time immemorial. 

What appears to be different, however, is not their frequency, but their intensity, with research reinforcing that we may be facing unique challenges and smaller windows to intervene as we move forward.

Findings from a modeling study, published in 2021 in Proceedings of the National Academy of Sciences, underscore that without effective intervention, the probability of extreme events like COVID-19 will likely increase threefold in the coming decades.

“The fact is, pandemic preparedness is not something that people have valued or thought of as important, or paid much attention to,” Amesh Adalja, MD, senior scholar, Johns Hopkins Center for Health Security, Baltimore, told this news organization.

“It’s all been based on some unusual cluster of cases that were causing severe disease and overwhelming local authorities. So often, like Indiana Jones, somebody got dispatched to deal with an outbreak,” Dr. Adalja said.

In a perfect post-COVID world, government bodies, scientists, clinicians, and others would cross silos to coordinate pandemic prevention, not just preparedness. The public would trust those who carry the title “public health” in their daily responsibilities, and in turn, public health experts would get back to their core responsibility – infectious disease preparedness – the role they were initially assigned following Europe’s Black Death during the 14th century. Instead, the world finds itself at a crossroads, with emerging and reemerging infectious disease outbreaks that on the surface appear to arise haphazardly but in reality are the result of decades of reaction and containment policies aimed at putting out fires, not addressing their cause.

Dr. Adalja noted that only when the threat of biological weapons became a reality in the mid-2000s was there a realization that economies of scale could be exploited by merging interests and efforts to develop health security medical countermeasures. For example, it encouraged governments to more closely integrate agencies like the Biomedical Advanced Research and Development Authority and infectious disease research organizations and individuals.

Still, while significant strides have been made in certain areas, the ongoing COVID-19 pandemic has revealed substantial weaknesses remaining in public and private health systems, as well as major gaps in infectious disease preparedness.
 

The role of spillover events

No matter whom you ask, scientists, public health and conservation experts, and infectious disease clinicians all point to one of the most important threats to human health. As Walt Kelly’s Pogo famously put it, “We have met the enemy, and he is us.”

“The reason why these outbreaks of novel infectious diseases are increasingly occurring is because of human-driven environmental change, particularly land use, unsafe practices when raising farmed animals, and commercial wildlife markets,” Neil M. Vora, MD, a physician specializing in pandemic prevention at Conservation International and a former Centers for Disease Control and Prevention epidemic intelligence officer, said in an interview.

In fact, more than 60% of emerging infections and diseases are due to these “spillover events” (zoonotic spillover) that occur when pathogens that commonly circulate in wildlife jump over to new, human hosts.

Several examples come to mind.

COVID-19 may have begun as an enzootic virus from two undetermined animals, using the Huanan Seafood Market as a possible intermediate reservoir, according to a July 26 preprint in the journal Science. 

Likewise, while the Ebola virus was originally attributed to deforestation efforts to create palm oil (which allowed fruit bat carriers to transfer the virus to humans), recent research suggests that bats dwelling in the walls of human dwellings and hospitals are responsible for the 2018 outbreak in the Democratic Republic of Congo. 

(Incidentally, just this week, a new Ebola case was confirmed in Eastern Congo, and it has been genetically linked to the previous outbreak, despite that outbreak having been declared over in early July.)

“When we clear forests, we create opportunities for humans to live alongside the forest edge and displace wildlife. There’s evidence that shows when [these] biodiverse areas are cleared, specialist species that evolved to live in the forests first start to disappear, whereas generalist species – rodents and bats – continue to survive and are able to carry pathogens that can be passed on to humans,” Dr. Vora explained.

So far, China’s outbreak of the novel Langya henipavirus is believed to have spread (either directly or indirectly) by rodents and shrews, according to reports from public health authorities like the European Centre for Disease Prevention and Control, which is currently monitoring the situation. 

Yet, an overreliance on surveillance and containment only perpetuates what Dr. Vora says are cycles of panic and neglect.

“We saw it with Ebola in 2015, in 2016 to 2017 with Zika, you see it with tuberculosis, with sexually transmitted infections, and with COVID. You have policymakers working on solutions, and once they think that they’ve fixed the problem, they’re going to move on to the next crisis.”

It’s also a question of equity.

Reports detailing the reemergence of monkeypox in Nigeria in 2017 were largely ignored, despite the fact that the United States assisted in diagnosing an early case in an 11-year-old boy. At the time, it was clear that the virus was spreading by human-to-human transmission versus animal-to-human transmission, something that had not been seen previously. 

“The current model [is] waiting for pathogens to spill over and then [continuing] to spread signals that rich countries are tolerant of these outbreaks so long as they don’t grow into epidemics or pandemics,” Dr. Vora said.

This model is clearly broken; roughly 5 years after Nigeria reported the resurgence of monkeypox, the United States has more than 14,000 confirmed cases, which represents more than a quarter of the total number of cases reported worldwide. 
 

Public health on the brink

I’s difficult to imagine a future without outbreaks and more pandemics, and if experts are to be believed, we are ill-prepared. 

“I think that we are in a situation where this is a major threat, and people have become complacent about it,” said Dr. Adalja, who noted that we should be asking ourselves if the “government is actually in a position to be able to respond in a way that we need them to or is [that response] tied up in bureaucracy and inefficiency?”

COVID-19 should have been seen as a wake-up call, and many of those deaths were preventable. “With monkeypox, they’re faltering; it should have been a layup, not a disaster,” he emphasized.

Ellen Eaton, MD, associate professor of infectious diseases at the University of Alabama at Birmingham, also pointed to the reality that by the time COVID-19 reached North America, the United States had already moved away from the model of the public health department as the epicenter of knowledge, education, awareness, and, ironically, public health.

“Thinking about my community, very few people knew the face and name of our local and state health officers,” she told this news organization.  

“There was just this inherent mistrust of these people. If you add in a lot of talking heads, a lot of politicians and messaging from non-experts that countered what was coming out of our public health agencies early, you had this huge disconnect; in the South, it was the perfect storm for vaccine hesitancy.”

At last count, this perfect storm has led to 1.46 million COVID cases and just over 20,000 deaths – many of which were preventable – in Alabama alone. 

“In certain parts of America, we were starting with a broken system with limited resources and few providers,” Dr. Eaton explained.

Dr. Eaton said that a lot of fields, not just medicine and public health, have finite resources that have been stretched to capacity by COVID, and now monkeypox, and wondered what was next as we’re headed into autumn and influenza season. But she also mentioned the tremendous implications of climate change on infectious diseases and community health and wellness.

“There’s a tremendous need to have the ability to survey not just humans but also how the disease burden in our environment that is fluctuating with climate change is going to impact communities in really important ways,” Dr. Eaton said. 
 

Upstream prevention

Dr. Vora said he could not agree more and believes that upstream prevention holds the key. 

“We have to make sure while there’s tension on this issue that the right solutions are implemented,” he said. 

In coming years, postspillover containment strategies – vaccine research and development and strengthening health care surveillance, for example – are likely to become inadequate.

“We saw it with COVID and we are seeing it again with monkeypox,” Dr. Vora said. “We also have to invest further upstream to prevent spillovers in the first place, for example, by addressing deforestation, commercial wildlife markets and trade, [and] infection control when raising farm animals.”

“The thing is, when you invest in those upstream solutions, you are also mitigating climate change and loss of biodiversity. I’m not saying that we should not invest in postspillover containment efforts; we’re never going to contain every spillover. But we also have to invest in prevention,” he added.

In a piece published in Nature, Dr. Vora and his coauthors acknowledge that several international bodies such as the World Health Organization and G7 have invested in initiatives to facilitate coordinated, global responses to climate change, pandemic preparedness, and response. But they point out that these efforts fail to “explicitly address the negative feedback cycle between environmental degradation, wildlife exploitation, and the emergence of pathogens.”

“Environmental conservation is no longer a left-wing fringe issue, it’s moving into public consciousness, and ... it is public health,” Dr. Vora said. “When we destroy nature, we’re destroying our own ability to survive.”

Dr. Adalja, Dr. Vora, and Dr. Eaton report no relevant financial relationships.

A version of this article first appeared on Medscape.com.

PARIS – France is boosting its vaccination campaign in response to the increase in cases of monkeypox. After a sluggish start, newly appointed French health minister François Braun has announced the release of 42,000 vaccine doses. At the same time, medical students will be able to lend a helping hand at vaccination sites. However, some experts have criticized the measures taken as being too lax to combat what the World Health Organization has designated a global health emergency.

For Benjamin Davido, MD, MSc, PhD, an infectious disease specialist at the Raymond-Poincaré Hospital (Paris Public Hospital Trust, AP-HP, Garches region), the risks of this disease have been minimized and the measures taken are not adequate, despite the ready availability of the tools needed to manage the epidemic. We must remain alert to the risks posed by this monkeypox epidemic, which seems different from the sporadic outbreaks that usually crop up in Central and West Africa, he said. Dr. Davido recently shared his opinions in an interview.

Question: What do you think about the monkeypox vaccination campaign currently underway in France?

Dr. Davido: It doesn’t go far enough, and I am surprised by the lack of a concrete and specific objective. The effects of the disease are being minimized, and we seem to be in limbo. It seems we have to wait until the fire is out of control before we can call the fire department. We should have been more reactive and taken a more drastic approach from the get-go. In France, as in other countries affected by this epidemic, we are still, unfortunately, in a phase of observation, reassuring ourselves that this will surely not become another pandemic, as that would be really bad luck.

Yet we find ourselves in an unprecedented situation: We have known about the disease in question for a long time, the target population has been identified, and we have a vaccine immediately available. So, we have all the tools and knowledge acquired from the COVID-19 pandemic at our disposal, yet we are choosing to wait and see. We have clearly underestimated the risks of failing after a stalled start to the vaccination campaign.

Question: What exactly are the risks, in your opinion?  Should we already be worried about how the epidemic is progressing?

Dr. Davido: The situation is definitely worrying. I personally am convinced that this disease will be the syphilis of the 21st century. Although the risk is low, it is not beyond the bounds of possibility that this could be the start of a new pandemic. For the time being, its spread is limited to at-risk populations, mainly men who have sex with other men and who have multiple partners, which accounts for around 300,000 people in France. However, the risk for heterosexuals must not be minimized; we must not forget that this disease can also be transmitted through contact with an infected person and by respiratory droplets from people living in the same household. There have been recent cases of women and children infected with monkeypox. If monkeypox starts to spread in the community, rather than being a sexually transmitted infection, the epidemic could spread to the rest of the population. With the rise in cases, scientists are also concerned about transmission to animals. Monkeypox could become endemic like it is in Africa, where rodents are the main reservoir of the virus.

Question: What do we know about the dynamics of this epidemic?  What can be done to effectively improve the situation?

Dr. Davido: Experience gained from African countries affected by monkeypox, as well as from the spate of cases that occurred in the United States in 2003, has shown us that the epidemic can be controlled once the cases have been contained. It is hoped that further waves of the epidemic can be avoided, providing the monkeypox vaccine achieves its objectives.

But we need to give ourselves the means to do so. The expansion of the vaccination program to the most at-risk populations in early July was the right decision. We have seen that ring vaccination targeting close-contact cases does not work with monkeypox. The current problem is that this vaccine is nearly exclusively restricted to hospital settings. We are making the same mistakes as [we did] at the start of the COVID-19 epidemic. We don’t have the right infrastructure in place for this vaccination program. We need to get doctors, paramedics, pharmacists, etc., involved. And cut back on the red tape. After embracing digital procedures during COVID-19, we find ourselves having to complete paper copies of documents for every single person attending a vaccination site. It just doesn’t make sense!

Question: You highlighted the lack of a clear objective with this vaccination campaign. What should we be aiming for?

Dr. Davido: During the COVID-19 vaccination campaign, there was a set number of people to be vaccinated within a given time frame. The approach demanded a fast pace and a desired outcome. Yes, it was an ambitious target from the get-go, but it was one that we stuck to. Currently, no figure, no target, has been set for the monkeypox vaccination program. Ideally, we would have completed the vaccination campaign before the start of the new school year to limit new infections.

As it stands now, only 10% of the target population has received the vaccine. There is talk of the summer period not being favorable. Yet I remember that last year, the COVID-19 vaccination program was strengthened in the middle of August. If the monkeypox vaccination campaign is not given a boost by the end of the summer, we run the risk of encouraging transmission of the virus between close contacts when different groups mix after being on holiday at the start of the new school year. I think that, first and foremost, we must make general practitioners aware of the disease and train them in how to diagnose it so that patients can be isolated and vaccinated as quickly as possible.

Question: There has also been talk of increasing the set 28-day period between the two doses, or even getting rid of it entirely. Would this perhaps lead to better vaccine uptake?

Dr. Davido: The United Kingdom has chosen to give a single dose and recommends a second dose after exposure. I am not sure that this is the best strategy. Although the efficacy data are still limited, the results are not as good after a single dose. According to initial data from the French National Agency for the Safety of Medicines and Health Products (the ANSM), the rate of seroconversion after one dose rises from 10% to 56% on D28 in healthy volunteers, but is between 77% and 89% 2 weeks after the second dose administered on D28.

So, the second dose is needed, especially as immunological memory seems to drop 2 years after the first injection. The U.S. Centers for Disease Control and Prevention proposes leaving 35 days between the two doses. I think this is a reasonable time frame. So, delaying the second dose makes administration of the first dose even easier because the second often fell in the middle of the holiday period and so we also save precious doses. If the time between doses is longer, we risk vaccinated individuals becoming lax and possibly being tempted to skip the “optional” booster or simply forgetting about it.

Question: Are people who have already had the smallpox vaccine better protected against monkeypox?

Dr. Davido: The efficacy of this vaccine against monkeypox is not perfect on a very long-term basis and, to be honest, we don’t really know the level of protection afforded by first-generation vaccines after 20 years. We must not forget that 20% of people infected with monkeypox were vaccinated against smallpox before mandatory vaccination for this disease was abolished [Editor’s note: The requirement of an initial dose of smallpox vaccine was lifted in 1979, once smallpox had been eradicated].

It is hoped that, as a minimum, this vaccine protects against serious illness. Yet in my department, we regularly see severe cases of monkeypox with widespread lesions in the over 45s, who are said to be vaccinated against smallpox.

Question: By comparison, is it likely that a third-generation vaccine would afford better protection against severe illness?

Dr. Davido: We still don’t have enough data or hindsight to assess the real-world impact of third-generation vaccines. This vaccine has a better tolerance profile than its predecessors, but we currently don’t know if it protects against severe forms of monkeypox. We also need to learn more about the disease causing the current epidemic, since it seems different from the sporadic outbreaks that usually crop up in Central and West Africa. The lesions seen are notably milder. The WHO has given this vaccine an efficacy level of 85% against infection by the monkeypox virus, but we must remain cautious: This figure is based on data from Africa. The epidemic in which we find ourselves is not the same. Overall, we must be wary of overly optimistic rhetoric around this new epidemic.

A version of this article appeared on Medscape.com. The article was translated from the Medscape French edition.

PARIS – France is boosting its vaccination campaign in response to the increase in cases of monkeypox. After a sluggish start, newly appointed French health minister François Braun has announced the release of 42,000 vaccine doses. At the same time, medical students will be able to lend a helping hand at vaccination sites. However, some experts have criticized the measures taken as being too lax to combat what the World Health Organization has designated a global health emergency.

For Benjamin Davido, MD, MSc, PhD, an infectious disease specialist at the Raymond-Poincaré Hospital (Paris Public Hospital Trust, AP-HP, Garches region), the risks of this disease have been minimized and the measures taken are not adequate, despite the ready availability of the tools needed to manage the epidemic. We must remain alert to the risks posed by this monkeypox epidemic, which seems different from the sporadic outbreaks that usually crop up in Central and West Africa, he said. Dr. Davido recently shared his opinions in an interview.

Question: What do you think about the monkeypox vaccination campaign currently underway in France?

Dr. Davido: It doesn’t go far enough, and I am surprised by the lack of a concrete and specific objective. The effects of the disease are being minimized, and we seem to be in limbo. It seems we have to wait until the fire is out of control before we can call the fire department. We should have been more reactive and taken a more drastic approach from the get-go. In France, as in other countries affected by this epidemic, we are still, unfortunately, in a phase of observation, reassuring ourselves that this will surely not become another pandemic, as that would be really bad luck.

Yet we find ourselves in an unprecedented situation: We have known about the disease in question for a long time, the target population has been identified, and we have a vaccine immediately available. So, we have all the tools and knowledge acquired from the COVID-19 pandemic at our disposal, yet we are choosing to wait and see. We have clearly underestimated the risks of failing after a stalled start to the vaccination campaign.

Question: What exactly are the risks, in your opinion?  Should we already be worried about how the epidemic is progressing?

Dr. Davido: The situation is definitely worrying. I personally am convinced that this disease will be the syphilis of the 21st century. Although the risk is low, it is not beyond the bounds of possibility that this could be the start of a new pandemic. For the time being, its spread is limited to at-risk populations, mainly men who have sex with other men and who have multiple partners, which accounts for around 300,000 people in France. However, the risk for heterosexuals must not be minimized; we must not forget that this disease can also be transmitted through contact with an infected person and by respiratory droplets from people living in the same household. There have been recent cases of women and children infected with monkeypox. If monkeypox starts to spread in the community, rather than being a sexually transmitted infection, the epidemic could spread to the rest of the population. With the rise in cases, scientists are also concerned about transmission to animals. Monkeypox could become endemic like it is in Africa, where rodents are the main reservoir of the virus.

Question: What do we know about the dynamics of this epidemic?  What can be done to effectively improve the situation?

Dr. Davido: Experience gained from African countries affected by monkeypox, as well as from the spate of cases that occurred in the United States in 2003, has shown us that the epidemic can be controlled once the cases have been contained. It is hoped that further waves of the epidemic can be avoided, providing the monkeypox vaccine achieves its objectives.

But we need to give ourselves the means to do so. The expansion of the vaccination program to the most at-risk populations in early July was the right decision. We have seen that ring vaccination targeting close-contact cases does not work with monkeypox. The current problem is that this vaccine is nearly exclusively restricted to hospital settings. We are making the same mistakes as [we did] at the start of the COVID-19 epidemic. We don’t have the right infrastructure in place for this vaccination program. We need to get doctors, paramedics, pharmacists, etc., involved. And cut back on the red tape. After embracing digital procedures during COVID-19, we find ourselves having to complete paper copies of documents for every single person attending a vaccination site. It just doesn’t make sense!

Question: You highlighted the lack of a clear objective with this vaccination campaign. What should we be aiming for?

Dr. Davido: During the COVID-19 vaccination campaign, there was a set number of people to be vaccinated within a given time frame. The approach demanded a fast pace and a desired outcome. Yes, it was an ambitious target from the get-go, but it was one that we stuck to. Currently, no figure, no target, has been set for the monkeypox vaccination program. Ideally, we would have completed the vaccination campaign before the start of the new school year to limit new infections.

As it stands now, only 10% of the target population has received the vaccine. There is talk of the summer period not being favorable. Yet I remember that last year, the COVID-19 vaccination program was strengthened in the middle of August. If the monkeypox vaccination campaign is not given a boost by the end of the summer, we run the risk of encouraging transmission of the virus between close contacts when different groups mix after being on holiday at the start of the new school year. I think that, first and foremost, we must make general practitioners aware of the disease and train them in how to diagnose it so that patients can be isolated and vaccinated as quickly as possible.

Question: There has also been talk of increasing the set 28-day period between the two doses, or even getting rid of it entirely. Would this perhaps lead to better vaccine uptake?

Dr. Davido: The United Kingdom has chosen to give a single dose and recommends a second dose after exposure. I am not sure that this is the best strategy. Although the efficacy data are still limited, the results are not as good after a single dose. According to initial data from the French National Agency for the Safety of Medicines and Health Products (the ANSM), the rate of seroconversion after one dose rises from 10% to 56% on D28 in healthy volunteers, but is between 77% and 89% 2 weeks after the second dose administered on D28.

So, the second dose is needed, especially as immunological memory seems to drop 2 years after the first injection. The U.S. Centers for Disease Control and Prevention proposes leaving 35 days between the two doses. I think this is a reasonable time frame. So, delaying the second dose makes administration of the first dose even easier because the second often fell in the middle of the holiday period and so we also save precious doses. If the time between doses is longer, we risk vaccinated individuals becoming lax and possibly being tempted to skip the “optional” booster or simply forgetting about it.

Question: Are people who have already had the smallpox vaccine better protected against monkeypox?

Dr. Davido: The efficacy of this vaccine against monkeypox is not perfect on a very long-term basis and, to be honest, we don’t really know the level of protection afforded by first-generation vaccines after 20 years. We must not forget that 20% of people infected with monkeypox were vaccinated against smallpox before mandatory vaccination for this disease was abolished [Editor’s note: The requirement of an initial dose of smallpox vaccine was lifted in 1979, once smallpox had been eradicated].

It is hoped that, as a minimum, this vaccine protects against serious illness. Yet in my department, we regularly see severe cases of monkeypox with widespread lesions in the over 45s, who are said to be vaccinated against smallpox.

Question: By comparison, is it likely that a third-generation vaccine would afford better protection against severe illness?

Dr. Davido: We still don’t have enough data or hindsight to assess the real-world impact of third-generation vaccines. This vaccine has a better tolerance profile than its predecessors, but we currently don’t know if it protects against severe forms of monkeypox. We also need to learn more about the disease causing the current epidemic, since it seems different from the sporadic outbreaks that usually crop up in Central and West Africa. The lesions seen are notably milder. The WHO has given this vaccine an efficacy level of 85% against infection by the monkeypox virus, but we must remain cautious: This figure is based on data from Africa. The epidemic in which we find ourselves is not the same. Overall, we must be wary of overly optimistic rhetoric around this new epidemic.

A version of this article appeared on Medscape.com. The article was translated from the Medscape French edition.

PARIS – France is boosting its vaccination campaign in response to the increase in cases of monkeypox. After a sluggish start, newly appointed French health minister François Braun has announced the release of 42,000 vaccine doses. At the same time, medical students will be able to lend a helping hand at vaccination sites. However, some experts have criticized the measures taken as being too lax to combat what the World Health Organization has designated a global health emergency.

For Benjamin Davido, MD, MSc, PhD, an infectious disease specialist at the Raymond-Poincaré Hospital (Paris Public Hospital Trust, AP-HP, Garches region), the risks of this disease have been minimized and the measures taken are not adequate, despite the ready availability of the tools needed to manage the epidemic. We must remain alert to the risks posed by this monkeypox epidemic, which seems different from the sporadic outbreaks that usually crop up in Central and West Africa, he said. Dr. Davido recently shared his opinions in an interview.

Question: What do you think about the monkeypox vaccination campaign currently underway in France?

Dr. Davido: It doesn’t go far enough, and I am surprised by the lack of a concrete and specific objective. The effects of the disease are being minimized, and we seem to be in limbo. It seems we have to wait until the fire is out of control before we can call the fire department. We should have been more reactive and taken a more drastic approach from the get-go. In France, as in other countries affected by this epidemic, we are still, unfortunately, in a phase of observation, reassuring ourselves that this will surely not become another pandemic, as that would be really bad luck.

Yet we find ourselves in an unprecedented situation: We have known about the disease in question for a long time, the target population has been identified, and we have a vaccine immediately available. So, we have all the tools and knowledge acquired from the COVID-19 pandemic at our disposal, yet we are choosing to wait and see. We have clearly underestimated the risks of failing after a stalled start to the vaccination campaign.

Question: What exactly are the risks, in your opinion?  Should we already be worried about how the epidemic is progressing?

Dr. Davido: The situation is definitely worrying. I personally am convinced that this disease will be the syphilis of the 21st century. Although the risk is low, it is not beyond the bounds of possibility that this could be the start of a new pandemic. For the time being, its spread is limited to at-risk populations, mainly men who have sex with other men and who have multiple partners, which accounts for around 300,000 people in France. However, the risk for heterosexuals must not be minimized; we must not forget that this disease can also be transmitted through contact with an infected person and by respiratory droplets from people living in the same household. There have been recent cases of women and children infected with monkeypox. If monkeypox starts to spread in the community, rather than being a sexually transmitted infection, the epidemic could spread to the rest of the population. With the rise in cases, scientists are also concerned about transmission to animals. Monkeypox could become endemic like it is in Africa, where rodents are the main reservoir of the virus.

Question: What do we know about the dynamics of this epidemic?  What can be done to effectively improve the situation?

Dr. Davido: Experience gained from African countries affected by monkeypox, as well as from the spate of cases that occurred in the United States in 2003, has shown us that the epidemic can be controlled once the cases have been contained. It is hoped that further waves of the epidemic can be avoided, providing the monkeypox vaccine achieves its objectives.

But we need to give ourselves the means to do so. The expansion of the vaccination program to the most at-risk populations in early July was the right decision. We have seen that ring vaccination targeting close-contact cases does not work with monkeypox. The current problem is that this vaccine is nearly exclusively restricted to hospital settings. We are making the same mistakes as [we did] at the start of the COVID-19 epidemic. We don’t have the right infrastructure in place for this vaccination program. We need to get doctors, paramedics, pharmacists, etc., involved. And cut back on the red tape. After embracing digital procedures during COVID-19, we find ourselves having to complete paper copies of documents for every single person attending a vaccination site. It just doesn’t make sense!

Question: You highlighted the lack of a clear objective with this vaccination campaign. What should we be aiming for?

Dr. Davido: During the COVID-19 vaccination campaign, there was a set number of people to be vaccinated within a given time frame. The approach demanded a fast pace and a desired outcome. Yes, it was an ambitious target from the get-go, but it was one that we stuck to. Currently, no figure, no target, has been set for the monkeypox vaccination program. Ideally, we would have completed the vaccination campaign before the start of the new school year to limit new infections.

As it stands now, only 10% of the target population has received the vaccine. There is talk of the summer period not being favorable. Yet I remember that last year, the COVID-19 vaccination program was strengthened in the middle of August. If the monkeypox vaccination campaign is not given a boost by the end of the summer, we run the risk of encouraging transmission of the virus between close contacts when different groups mix after being on holiday at the start of the new school year. I think that, first and foremost, we must make general practitioners aware of the disease and train them in how to diagnose it so that patients can be isolated and vaccinated as quickly as possible.

Question: There has also been talk of increasing the set 28-day period between the two doses, or even getting rid of it entirely. Would this perhaps lead to better vaccine uptake?

Dr. Davido: The United Kingdom has chosen to give a single dose and recommends a second dose after exposure. I am not sure that this is the best strategy. Although the efficacy data are still limited, the results are not as good after a single dose. According to initial data from the French National Agency for the Safety of Medicines and Health Products (the ANSM), the rate of seroconversion after one dose rises from 10% to 56% on D28 in healthy volunteers, but is between 77% and 89% 2 weeks after the second dose administered on D28.

So, the second dose is needed, especially as immunological memory seems to drop 2 years after the first injection. The U.S. Centers for Disease Control and Prevention proposes leaving 35 days between the two doses. I think this is a reasonable time frame. So, delaying the second dose makes administration of the first dose even easier because the second often fell in the middle of the holiday period and so we also save precious doses. If the time between doses is longer, we risk vaccinated individuals becoming lax and possibly being tempted to skip the “optional” booster or simply forgetting about it.

Question: Are people who have already had the smallpox vaccine better protected against monkeypox?

Dr. Davido: The efficacy of this vaccine against monkeypox is not perfect on a very long-term basis and, to be honest, we don’t really know the level of protection afforded by first-generation vaccines after 20 years. We must not forget that 20% of people infected with monkeypox were vaccinated against smallpox before mandatory vaccination for this disease was abolished [Editor’s note: The requirement of an initial dose of smallpox vaccine was lifted in 1979, once smallpox had been eradicated].

It is hoped that, as a minimum, this vaccine protects against serious illness. Yet in my department, we regularly see severe cases of monkeypox with widespread lesions in the over 45s, who are said to be vaccinated against smallpox.

Question: By comparison, is it likely that a third-generation vaccine would afford better protection against severe illness?

Dr. Davido: We still don’t have enough data or hindsight to assess the real-world impact of third-generation vaccines. This vaccine has a better tolerance profile than its predecessors, but we currently don’t know if it protects against severe forms of monkeypox. We also need to learn more about the disease causing the current epidemic, since it seems different from the sporadic outbreaks that usually crop up in Central and West Africa. The lesions seen are notably milder. The WHO has given this vaccine an efficacy level of 85% against infection by the monkeypox virus, but we must remain cautious: This figure is based on data from Africa. The epidemic in which we find ourselves is not the same. Overall, we must be wary of overly optimistic rhetoric around this new epidemic.

A version of this article appeared on Medscape.com. The article was translated from the Medscape French edition.

Researchers in France have discovered monkeypox virus in anal samples of men with no symptoms of the disease, advancing the possibility that asymptomatic carriers may be hidden drivers of the global outbreak.

The findings, published in Annals of Internal Medicine, follow a similar, non–peer-reviewed report from Belgium. Researchers in both studies tested swabs for monkeypox in men who have sex with men. These swabs had been collected for routine STI screening.

It’s unclear whether asymptomatic individuals who test positive for monkeypox can spread the virus, the French team wrote. But if so, public health strategies to vaccinate those with known exposure “may not be sufficient to contain spread.”

In an editorial accompanying their paper, Stuart Isaacs, MD, associate professor at the University of Pennsylvania, Philadelphia, said it “raises the question of whether asymptomatic or subclinical infections are contributing to the current worldwide outbreak.”

Historically, transmission of monkeypox and its close relative, smallpox, was thought to be greatest when a rash was present, Dr. Isaacs wrote. “Long chains of human-to-human transmission were rare” with monkeypox.

That’s changed with the current outbreak, which was first detected in May. On Aug. 17, the World Health Organization reported more than 35,000 cases in 92 countries, with 12 deaths.
 

Research methods

For the French study, researchers conducted polymerase chain reaction tests on 200 anorectal swabs from asymptomatic individuals that had been collected from June 5 to July 11 in order to screen for gonorrhea and chlamydia. Of those, 13 (6.5%) were positive for monkeypox.

During the study period, STI testing had been suspended in individuals with monkeypox symptoms because of safety concerns, the researchers reported.

The research team contacted the 13 monkeypox-positive patients and advised them to limit sexual activity for 21 days following their test and notify recent sexual partners. None reported having developed symptoms, but two subsequently returned to the clinic with symptoms – one had an anal rash and the other a sore throat.

In the Belgian report, posted publicly on June 21 as a preprint, 3 of 224 anal samples collected for STI screening in May tested positive for monkeypox. All three of the men who tested positive said they did not have any symptoms in the weeks before and after the sample was taken.

At follow-up testing, 21-37 days after the initial samples were taken, all patients who had previously tested positive were negative. This was “likely as a consequence of spontaneous clearance of the infection,” the authors of that paper wrote.
 

Clinical implications of findings are uncertain

Monica Gandhi, MD, MPH, a professor of medicine at the University of California, San Francisco, said in an interview that the clinical implications of the findings are uncertain because it’s not known how much viral transmission results from asymptomatic individuals.

Gandhi_Monica_CALIF_web2.jpg

Nevertheless, Dr. Gandhi said that “vaccinating all gay men for monkeypox who will accept the vaccine is prudent,” compared with a less aggressive strategy of only vaccinating those with known exposure, which is called ring vaccination. That way, “we can be assured to provide immunity to large swaths of the at-risk population.”

Dr. Gandhi said that movement toward mass vaccination of gay men is occurring in the United States, Canada, Europe, and Australia, despite limited vaccine supply.

She added that, although monkeypox has been concentrated in communities of men who have sex with men, “anyone with multiple sexual partners should be vaccinated given the data.”

However, a WHO official recently cautioned that reports of breakthrough infections in individuals who were vaccinated against monkeypox constitute a reminder that “vaccine is not a silver bullet.”
 

Non-vaccine interventions are also needed

Other experts stressed the need for nonvaccine interventions.

In his editorial, Dr. Isaacs said an “expanded” ring vaccination strategy in communities of high risk is likely needed, but ultimately the outbreak will only be controlled if vaccination is accompanied by other measures such as identifying and isolating cases, making treatment available, and educating individuals about how to reduce their risk.

Marty_Aileen_FLA_web.jpg

Aileen Marty, MD, a professor of infectious diseases at Florida International University, Miami, said in an interview that the new evidence makes it “incredibly important” to inform people that they might be infected by a sex partner even if that person does not have telltale lesions.

Dr. Marty said she has been advising men who have sex with men to “reduce or eliminate situations in which they find themselves with multiple anonymous individuals.”

Although most individuals recover from monkeypox, the disease can lead to hospitalization, disfigurement, blindness, and even death, Dr. Marty noted, adding that monkeypox is “absolutely a disease to avoid.”

Authors of the French study reported financial relationships with Gilead Sciences, Viiv Healthcare, MSD, AstraZeneca, Theratechnologies, Janssen Pharmaceuticals, Pfizer, GlaxoSmithKline, and bioMérieux. Dr. Isaacs reported grants from the Department of Veterans Affairs and the National Institutes of Health and royalties from UpToDate. Dr. Gandhi and Dr. Marty reported no relevant financial interests.

Researchers in France have discovered monkeypox virus in anal samples of men with no symptoms of the disease, advancing the possibility that asymptomatic carriers may be hidden drivers of the global outbreak.

The findings, published in Annals of Internal Medicine, follow a similar, non–peer-reviewed report from Belgium. Researchers in both studies tested swabs for monkeypox in men who have sex with men. These swabs had been collected for routine STI screening.

It’s unclear whether asymptomatic individuals who test positive for monkeypox can spread the virus, the French team wrote. But if so, public health strategies to vaccinate those with known exposure “may not be sufficient to contain spread.”

In an editorial accompanying their paper, Stuart Isaacs, MD, associate professor at the University of Pennsylvania, Philadelphia, said it “raises the question of whether asymptomatic or subclinical infections are contributing to the current worldwide outbreak.”

Historically, transmission of monkeypox and its close relative, smallpox, was thought to be greatest when a rash was present, Dr. Isaacs wrote. “Long chains of human-to-human transmission were rare” with monkeypox.

That’s changed with the current outbreak, which was first detected in May. On Aug. 17, the World Health Organization reported more than 35,000 cases in 92 countries, with 12 deaths.
 

Research methods

For the French study, researchers conducted polymerase chain reaction tests on 200 anorectal swabs from asymptomatic individuals that had been collected from June 5 to July 11 in order to screen for gonorrhea and chlamydia. Of those, 13 (6.5%) were positive for monkeypox.

During the study period, STI testing had been suspended in individuals with monkeypox symptoms because of safety concerns, the researchers reported.

The research team contacted the 13 monkeypox-positive patients and advised them to limit sexual activity for 21 days following their test and notify recent sexual partners. None reported having developed symptoms, but two subsequently returned to the clinic with symptoms – one had an anal rash and the other a sore throat.

In the Belgian report, posted publicly on June 21 as a preprint, 3 of 224 anal samples collected for STI screening in May tested positive for monkeypox. All three of the men who tested positive said they did not have any symptoms in the weeks before and after the sample was taken.

At follow-up testing, 21-37 days after the initial samples were taken, all patients who had previously tested positive were negative. This was “likely as a consequence of spontaneous clearance of the infection,” the authors of that paper wrote.
 

Clinical implications of findings are uncertain

Monica Gandhi, MD, MPH, a professor of medicine at the University of California, San Francisco, said in an interview that the clinical implications of the findings are uncertain because it’s not known how much viral transmission results from asymptomatic individuals.

Gandhi_Monica_CALIF_web2.jpg

Nevertheless, Dr. Gandhi said that “vaccinating all gay men for monkeypox who will accept the vaccine is prudent,” compared with a less aggressive strategy of only vaccinating those with known exposure, which is called ring vaccination. That way, “we can be assured to provide immunity to large swaths of the at-risk population.”

Dr. Gandhi said that movement toward mass vaccination of gay men is occurring in the United States, Canada, Europe, and Australia, despite limited vaccine supply.

She added that, although monkeypox has been concentrated in communities of men who have sex with men, “anyone with multiple sexual partners should be vaccinated given the data.”

However, a WHO official recently cautioned that reports of breakthrough infections in individuals who were vaccinated against monkeypox constitute a reminder that “vaccine is not a silver bullet.”
 

Non-vaccine interventions are also needed

Other experts stressed the need for nonvaccine interventions.

In his editorial, Dr. Isaacs said an “expanded” ring vaccination strategy in communities of high risk is likely needed, but ultimately the outbreak will only be controlled if vaccination is accompanied by other measures such as identifying and isolating cases, making treatment available, and educating individuals about how to reduce their risk.

Marty_Aileen_FLA_web.jpg

Aileen Marty, MD, a professor of infectious diseases at Florida International University, Miami, said in an interview that the new evidence makes it “incredibly important” to inform people that they might be infected by a sex partner even if that person does not have telltale lesions.

Dr. Marty said she has been advising men who have sex with men to “reduce or eliminate situations in which they find themselves with multiple anonymous individuals.”

Although most individuals recover from monkeypox, the disease can lead to hospitalization, disfigurement, blindness, and even death, Dr. Marty noted, adding that monkeypox is “absolutely a disease to avoid.”

Authors of the French study reported financial relationships with Gilead Sciences, Viiv Healthcare, MSD, AstraZeneca, Theratechnologies, Janssen Pharmaceuticals, Pfizer, GlaxoSmithKline, and bioMérieux. Dr. Isaacs reported grants from the Department of Veterans Affairs and the National Institutes of Health and royalties from UpToDate. Dr. Gandhi and Dr. Marty reported no relevant financial interests.

Researchers in France have discovered monkeypox virus in anal samples of men with no symptoms of the disease, advancing the possibility that asymptomatic carriers may be hidden drivers of the global outbreak.

The findings, published in Annals of Internal Medicine, follow a similar, non–peer-reviewed report from Belgium. Researchers in both studies tested swabs for monkeypox in men who have sex with men. These swabs had been collected for routine STI screening.

It’s unclear whether asymptomatic individuals who test positive for monkeypox can spread the virus, the French team wrote. But if so, public health strategies to vaccinate those with known exposure “may not be sufficient to contain spread.”

In an editorial accompanying their paper, Stuart Isaacs, MD, associate professor at the University of Pennsylvania, Philadelphia, said it “raises the question of whether asymptomatic or subclinical infections are contributing to the current worldwide outbreak.”

Historically, transmission of monkeypox and its close relative, smallpox, was thought to be greatest when a rash was present, Dr. Isaacs wrote. “Long chains of human-to-human transmission were rare” with monkeypox.

That’s changed with the current outbreak, which was first detected in May. On Aug. 17, the World Health Organization reported more than 35,000 cases in 92 countries, with 12 deaths.
 

Research methods

For the French study, researchers conducted polymerase chain reaction tests on 200 anorectal swabs from asymptomatic individuals that had been collected from June 5 to July 11 in order to screen for gonorrhea and chlamydia. Of those, 13 (6.5%) were positive for monkeypox.

During the study period, STI testing had been suspended in individuals with monkeypox symptoms because of safety concerns, the researchers reported.

The research team contacted the 13 monkeypox-positive patients and advised them to limit sexual activity for 21 days following their test and notify recent sexual partners. None reported having developed symptoms, but two subsequently returned to the clinic with symptoms – one had an anal rash and the other a sore throat.

In the Belgian report, posted publicly on June 21 as a preprint, 3 of 224 anal samples collected for STI screening in May tested positive for monkeypox. All three of the men who tested positive said they did not have any symptoms in the weeks before and after the sample was taken.

At follow-up testing, 21-37 days after the initial samples were taken, all patients who had previously tested positive were negative. This was “likely as a consequence of spontaneous clearance of the infection,” the authors of that paper wrote.
 

Clinical implications of findings are uncertain

Monica Gandhi, MD, MPH, a professor of medicine at the University of California, San Francisco, said in an interview that the clinical implications of the findings are uncertain because it’s not known how much viral transmission results from asymptomatic individuals.

Gandhi_Monica_CALIF_web2.jpg

Nevertheless, Dr. Gandhi said that “vaccinating all gay men for monkeypox who will accept the vaccine is prudent,” compared with a less aggressive strategy of only vaccinating those with known exposure, which is called ring vaccination. That way, “we can be assured to provide immunity to large swaths of the at-risk population.”

Dr. Gandhi said that movement toward mass vaccination of gay men is occurring in the United States, Canada, Europe, and Australia, despite limited vaccine supply.

She added that, although monkeypox has been concentrated in communities of men who have sex with men, “anyone with multiple sexual partners should be vaccinated given the data.”

However, a WHO official recently cautioned that reports of breakthrough infections in individuals who were vaccinated against monkeypox constitute a reminder that “vaccine is not a silver bullet.”
 

Non-vaccine interventions are also needed

Other experts stressed the need for nonvaccine interventions.

In his editorial, Dr. Isaacs said an “expanded” ring vaccination strategy in communities of high risk is likely needed, but ultimately the outbreak will only be controlled if vaccination is accompanied by other measures such as identifying and isolating cases, making treatment available, and educating individuals about how to reduce their risk.

Marty_Aileen_FLA_web.jpg

Aileen Marty, MD, a professor of infectious diseases at Florida International University, Miami, said in an interview that the new evidence makes it “incredibly important” to inform people that they might be infected by a sex partner even if that person does not have telltale lesions.

Dr. Marty said she has been advising men who have sex with men to “reduce or eliminate situations in which they find themselves with multiple anonymous individuals.”

Although most individuals recover from monkeypox, the disease can lead to hospitalization, disfigurement, blindness, and even death, Dr. Marty noted, adding that monkeypox is “absolutely a disease to avoid.”

Authors of the French study reported financial relationships with Gilead Sciences, Viiv Healthcare, MSD, AstraZeneca, Theratechnologies, Janssen Pharmaceuticals, Pfizer, GlaxoSmithKline, and bioMérieux. Dr. Isaacs reported grants from the Department of Veterans Affairs and the National Institutes of Health and royalties from UpToDate. Dr. Gandhi and Dr. Marty reported no relevant financial interests.

Polio virus has been discovered in New York City’s sewers, suggesting that the virus is circulating in the city, New York’s health authorities said Aug. 12.

The detection of polio in NYC is alarming but not surprising, said New York State Health Commissioner Mary Bassett, MD, MPH.

“For every one case of paralytic polio identified, hundreds more may be undetected,” Dr. Bassett said. “The best way to keep adults and children polio-free is through safe and effective immunization.”

Polio can cause permanent paralysis of limbs and even death in some cases. Before this outbreak, the last case of polio in the United States was in 2013.

The announcement came after a man in Rockland County, New York, north of the city, was stricken with polio at the end of July and paralyzed.

Now, health officials fear that the detection of polio in NYC wastewater could bring other cases of paralytic polio.

“It is not surprising, since this is something already seen with Rockland County,” Amesh Adalja, MD, senior scholar at the Johns Hopkins Center for Health Security in Baltimore, told this news organization. “This is solely the result of under-vaccination in the area. I think it’s likely that we will see a few paralytic cases but not a high number.”
 

Vaccinations declined in pandemic

Among the worries is that vaccination rates across New York City dipped during the pandemic because pediatrician visits were postponed.

In New York City, the overall rate of polio vaccination among children aged 5 years or younger is 86%. Still, in some city ZIP codes, fewer than two-thirds of children in that age group have received the full dosage, which worries health officials.

However, most adults were vaccinated against polio as children.

Across New York state, nearly 80% of people have been vaccinated, according to data from the state public health department. Those who are unvaccinated are at risk, but the polio vaccine is nearly 100% effective in people who are fully immunized.

New York health authorities are calling on those who are unvaccinated to get their shots immediately.

“The risk to New Yorkers is real, but the defense is so simple – get vaccinated against polio,” New York City Health Commissioner Ashwin Vasan, MD, PhD, said in a statement. “Polio is entirely preventable, and its reappearance should be a call for all of us.”

Though many of those who are infected have no symptoms, about 4% will get viral meningitis “and about 1 in 200 will become paralyzed,” according to a news release.
 

Symptoms can be flu-like

Symptoms can include those similar to the flu, such as sore throat, fever, fatigue, nausea, and stomach ache. There is no cure for the disease. 

The city’s health department has given no details about where exactly polio had been found in NYC’s wastewater nor did they give dates the virus was detected.

Health authorities urged parents of children who are not yet fully vaccinated to bring them to their pediatricians.

In 1916, polio killed 6,000 people in the United States and left at least another 21,000 – most of them children – permanently disabled.

An outbreak in 1952 caused paralysis in more than 20,000 people and left many children on iron lungs. The first effective vaccine emerged just a few years later and the virus began to wane.

A version of this article first appeared on Medscape.com.

Polio virus has been discovered in New York City’s sewers, suggesting that the virus is circulating in the city, New York’s health authorities said Aug. 12.

The detection of polio in NYC is alarming but not surprising, said New York State Health Commissioner Mary Bassett, MD, MPH.

“For every one case of paralytic polio identified, hundreds more may be undetected,” Dr. Bassett said. “The best way to keep adults and children polio-free is through safe and effective immunization.”

Polio can cause permanent paralysis of limbs and even death in some cases. Before this outbreak, the last case of polio in the United States was in 2013.

The announcement came after a man in Rockland County, New York, north of the city, was stricken with polio at the end of July and paralyzed.

Now, health officials fear that the detection of polio in NYC wastewater could bring other cases of paralytic polio.

“It is not surprising, since this is something already seen with Rockland County,” Amesh Adalja, MD, senior scholar at the Johns Hopkins Center for Health Security in Baltimore, told this news organization. “This is solely the result of under-vaccination in the area. I think it’s likely that we will see a few paralytic cases but not a high number.”
 

Vaccinations declined in pandemic

Among the worries is that vaccination rates across New York City dipped during the pandemic because pediatrician visits were postponed.

In New York City, the overall rate of polio vaccination among children aged 5 years or younger is 86%. Still, in some city ZIP codes, fewer than two-thirds of children in that age group have received the full dosage, which worries health officials.

However, most adults were vaccinated against polio as children.

Across New York state, nearly 80% of people have been vaccinated, according to data from the state public health department. Those who are unvaccinated are at risk, but the polio vaccine is nearly 100% effective in people who are fully immunized.

New York health authorities are calling on those who are unvaccinated to get their shots immediately.

“The risk to New Yorkers is real, but the defense is so simple – get vaccinated against polio,” New York City Health Commissioner Ashwin Vasan, MD, PhD, said in a statement. “Polio is entirely preventable, and its reappearance should be a call for all of us.”

Though many of those who are infected have no symptoms, about 4% will get viral meningitis “and about 1 in 200 will become paralyzed,” according to a news release.
 

Symptoms can be flu-like

Symptoms can include those similar to the flu, such as sore throat, fever, fatigue, nausea, and stomach ache. There is no cure for the disease. 

The city’s health department has given no details about where exactly polio had been found in NYC’s wastewater nor did they give dates the virus was detected.

Health authorities urged parents of children who are not yet fully vaccinated to bring them to their pediatricians.

In 1916, polio killed 6,000 people in the United States and left at least another 21,000 – most of them children – permanently disabled.

An outbreak in 1952 caused paralysis in more than 20,000 people and left many children on iron lungs. The first effective vaccine emerged just a few years later and the virus began to wane.

A version of this article first appeared on Medscape.com.

Polio virus has been discovered in New York City’s sewers, suggesting that the virus is circulating in the city, New York’s health authorities said Aug. 12.

The detection of polio in NYC is alarming but not surprising, said New York State Health Commissioner Mary Bassett, MD, MPH.

“For every one case of paralytic polio identified, hundreds more may be undetected,” Dr. Bassett said. “The best way to keep adults and children polio-free is through safe and effective immunization.”

Polio can cause permanent paralysis of limbs and even death in some cases. Before this outbreak, the last case of polio in the United States was in 2013.

The announcement came after a man in Rockland County, New York, north of the city, was stricken with polio at the end of July and paralyzed.

Now, health officials fear that the detection of polio in NYC wastewater could bring other cases of paralytic polio.

“It is not surprising, since this is something already seen with Rockland County,” Amesh Adalja, MD, senior scholar at the Johns Hopkins Center for Health Security in Baltimore, told this news organization. “This is solely the result of under-vaccination in the area. I think it’s likely that we will see a few paralytic cases but not a high number.”
 

Vaccinations declined in pandemic

Among the worries is that vaccination rates across New York City dipped during the pandemic because pediatrician visits were postponed.

In New York City, the overall rate of polio vaccination among children aged 5 years or younger is 86%. Still, in some city ZIP codes, fewer than two-thirds of children in that age group have received the full dosage, which worries health officials.

However, most adults were vaccinated against polio as children.

Across New York state, nearly 80% of people have been vaccinated, according to data from the state public health department. Those who are unvaccinated are at risk, but the polio vaccine is nearly 100% effective in people who are fully immunized.

New York health authorities are calling on those who are unvaccinated to get their shots immediately.

“The risk to New Yorkers is real, but the defense is so simple – get vaccinated against polio,” New York City Health Commissioner Ashwin Vasan, MD, PhD, said in a statement. “Polio is entirely preventable, and its reappearance should be a call for all of us.”

Though many of those who are infected have no symptoms, about 4% will get viral meningitis “and about 1 in 200 will become paralyzed,” according to a news release.
 

Symptoms can be flu-like

Symptoms can include those similar to the flu, such as sore throat, fever, fatigue, nausea, and stomach ache. There is no cure for the disease. 

The city’s health department has given no details about where exactly polio had been found in NYC’s wastewater nor did they give dates the virus was detected.

Health authorities urged parents of children who are not yet fully vaccinated to bring them to their pediatricians.

In 1916, polio killed 6,000 people in the United States and left at least another 21,000 – most of them children – permanently disabled.

An outbreak in 1952 caused paralysis in more than 20,000 people and left many children on iron lungs. The first effective vaccine emerged just a few years later and the virus began to wane.

A version of this article first appeared on Medscape.com.

The United States has now recorded more than 10,000 confirmed monkeypox cases, according to data released by the Centers for Disease Control and Prevention.

The United States passed the 10,000 mark on Aug. 10, with the number climbing to 10,768 by the morning of Aug. 12, according to the latest CDC data. Monkeypox cases have been found in every state except Wyoming. New York (2,187), California (1,892), and Florida (1,053) have reported the most cases. So far, no monkeypox deaths have been reported in the United States.

The numbers are increasing, with 1,391 cases reported in the United States on Aug. 12 alone, by far the most in 1 day since the current outbreak began.

“We are still operating under a containment goal, although I know many states are starting to wonder if we’re shifting to more of a mitigation phase right now, given that our case counts are still rising rapidly,” Jennifer McQuiston, DVM, the CDC’s top monkeypox official, told a group of the agency’s advisers on Aug. 9, according to CBS News.

Since late July, the United States has reported more monkeypox cases than any other nation. After the United States, Spain has reported 5,162 cases, the United Kingdom 3,017, and France 2,423, according to the World Health Organization.

Globally, 31,655 cases have been recorded, with 5,108 of those cases coming in the last 7 days, according to the WHO. There have been 12 deaths attributed to monkeypox, with one coming in the last week.

The smallpox-like disease was first found in humans in the Democratic Republic of the Congo in 1970 and has become more common in West and Central Africa. It began spreading to European and other Western nations in May 2022.

The WHO declared it a global public health emergency in late July, and the Biden administration declared it a national health emergency Aug. 4.

To fight the spread of monkeypox, the Biden administration is buying $26 million worth of SIGA Technologies Inc.’s IV version of the antiviral drug TPOXX, the company announced on Aug. 9.

U.S. health officials also modified monkeypox vaccine dosing instructions to stretch the supply of vaccine. Instead of sticking with a standard shot that would enter deep into tissue, the FDA now encourages a new way: just under the skin at one-fifth the usual dose.

A version of this article first appeared on WebMD.com.

The United States has now recorded more than 10,000 confirmed monkeypox cases, according to data released by the Centers for Disease Control and Prevention.

The United States passed the 10,000 mark on Aug. 10, with the number climbing to 10,768 by the morning of Aug. 12, according to the latest CDC data. Monkeypox cases have been found in every state except Wyoming. New York (2,187), California (1,892), and Florida (1,053) have reported the most cases. So far, no monkeypox deaths have been reported in the United States.

The numbers are increasing, with 1,391 cases reported in the United States on Aug. 12 alone, by far the most in 1 day since the current outbreak began.

“We are still operating under a containment goal, although I know many states are starting to wonder if we’re shifting to more of a mitigation phase right now, given that our case counts are still rising rapidly,” Jennifer McQuiston, DVM, the CDC’s top monkeypox official, told a group of the agency’s advisers on Aug. 9, according to CBS News.

Since late July, the United States has reported more monkeypox cases than any other nation. After the United States, Spain has reported 5,162 cases, the United Kingdom 3,017, and France 2,423, according to the World Health Organization.

Globally, 31,655 cases have been recorded, with 5,108 of those cases coming in the last 7 days, according to the WHO. There have been 12 deaths attributed to monkeypox, with one coming in the last week.

The smallpox-like disease was first found in humans in the Democratic Republic of the Congo in 1970 and has become more common in West and Central Africa. It began spreading to European and other Western nations in May 2022.

The WHO declared it a global public health emergency in late July, and the Biden administration declared it a national health emergency Aug. 4.

To fight the spread of monkeypox, the Biden administration is buying $26 million worth of SIGA Technologies Inc.’s IV version of the antiviral drug TPOXX, the company announced on Aug. 9.

U.S. health officials also modified monkeypox vaccine dosing instructions to stretch the supply of vaccine. Instead of sticking with a standard shot that would enter deep into tissue, the FDA now encourages a new way: just under the skin at one-fifth the usual dose.

A version of this article first appeared on WebMD.com.

The United States has now recorded more than 10,000 confirmed monkeypox cases, according to data released by the Centers for Disease Control and Prevention.

The United States passed the 10,000 mark on Aug. 10, with the number climbing to 10,768 by the morning of Aug. 12, according to the latest CDC data. Monkeypox cases have been found in every state except Wyoming. New York (2,187), California (1,892), and Florida (1,053) have reported the most cases. So far, no monkeypox deaths have been reported in the United States.

The numbers are increasing, with 1,391 cases reported in the United States on Aug. 12 alone, by far the most in 1 day since the current outbreak began.

“We are still operating under a containment goal, although I know many states are starting to wonder if we’re shifting to more of a mitigation phase right now, given that our case counts are still rising rapidly,” Jennifer McQuiston, DVM, the CDC’s top monkeypox official, told a group of the agency’s advisers on Aug. 9, according to CBS News.

Since late July, the United States has reported more monkeypox cases than any other nation. After the United States, Spain has reported 5,162 cases, the United Kingdom 3,017, and France 2,423, according to the World Health Organization.

Globally, 31,655 cases have been recorded, with 5,108 of those cases coming in the last 7 days, according to the WHO. There have been 12 deaths attributed to monkeypox, with one coming in the last week.

The smallpox-like disease was first found in humans in the Democratic Republic of the Congo in 1970 and has become more common in West and Central Africa. It began spreading to European and other Western nations in May 2022.

The WHO declared it a global public health emergency in late July, and the Biden administration declared it a national health emergency Aug. 4.

To fight the spread of monkeypox, the Biden administration is buying $26 million worth of SIGA Technologies Inc.’s IV version of the antiviral drug TPOXX, the company announced on Aug. 9.

U.S. health officials also modified monkeypox vaccine dosing instructions to stretch the supply of vaccine. Instead of sticking with a standard shot that would enter deep into tissue, the FDA now encourages a new way: just under the skin at one-fifth the usual dose.

A version of this article first appeared on WebMD.com.