Neonatal Medicine

Infants born in a country with no endemic measles no longer received adequate protection against the disease from maternal antibodies when they were aged 6 months, according to new research.

FatCamera/E+/Getty Images

In fact, most of the 196 infants’ maternal measles antibodies had dropped below the protective threshold by 3 months of age – well before the recommended age of 12-15 months for the first dose of MMR vaccine.

The odds of inadequate protection doubled for each additional month of age, Michelle Science, MD, of the University of Toronto and associates reported in Pediatrics.

“The widening gap between loss of maternal antibodies and measles vaccination described in our study leaves infants vulnerable to measles for much of their infancy and highlights the need for further research to support public health policy,” Dr. Science and colleagues wrote.

The findings are not surprising for a setting in which measles has been eliminated and align with results from past research, Huong Q. McLean, PhD, MPH, of the Marshfield (Wis.) Clinic Research Institute and Walter A. Orenstein, MD, of Emory University in Atlanta wrote in an accompanying editorial (Pediatrics. 2019 Nov 21. doi: 10.1542/peds.2019-2541).

However, this susceptibility prior to receiving the MMR has taken on a new significance more recently, Dr. McLean and Dr. Orenstein suggested.

“In light of increasing measles outbreaks during the past year reaching levels not recorded in the United States since 1992 and increased measles elsewhere, coupled with the risk of severe illness in infants, there is increased concern regarding the protection of infants against measles,” the editorialists wrote.

Dr. Science and colleagues tested serum samples from 196 term infants, all under 12 months old, for antibodies against measles. The sera had been previously collected at a single tertiary care center in Ontario for clinical testing and then stored. Measles has been eliminated in Canada since 1998.

The researchers randomly selected 25 samples for each of eight different age groups: up to 30 days old; 1 month (31-60 days); 2 months (61-89 days); 3 months (90-119 days); 4 months; 5 months; 6-9 months; and 9-11 months.

Just over half the babies (56%) were male, and 35% had an underlying condition, but none had conditions that might affect antibody levels. The conditions were primarily a developmental delay or otherwise affecting the central nervous system, liver, or gastrointestinal function. Mean maternal age was 32 years.

To ensure high test sensitivity, the researchers used the plaque-reduction neutralization test (PRNT) to test for measles-neutralizing antibodies instead of using enzyme-linked immunosorbent assay (ELISA) because “ELISA sensitivity decreases as antibody titers decrease,” Dr. Science and colleagues wrote. They used a neutralization titer of less than 192 mIU/mL as the threshold for protection against measles.

When the researchers calculated the predicted standardized mean antibody titer for infants with a mother aged 32 years, they determined their mean to be 541 mIU/mL at 1 month, 142 mIU/mL at 3 months (below the measles threshold of susceptibility of 192 mIU/mL) , and 64 mIU/mL at 6 months. None of the infants had measles antibodies above the protective threshold at 6 months old, the authors noted.

Children’s odds of susceptibility to measles doubled for each additional month of age, after adjustment for infant sex and maternal age (odds ratio, 2.13). Children’s likelihood of susceptibility to measles modestly increased as maternal age increased in 5-year increments from 25 to 40 years.

Children with an underlying conditions had greater susceptibility to measles (83%), compared with those without a comorbidity (68%, P = .03). No difference in susceptibility existed between males and females or based on gestational age at birth (ranging from 37 to 41 weeks).

The Advisory Committee on Immunization Practices permits measles vaccination “as early as 6 months for infants who plan to travel internationally, infants with ongoing risk for exposure during measles outbreaks and as postexposure prophylaxis,” Dr. McLean and Dr. Orenstein noted in their editorial.

They discussed the rationale for various changes in the recommended schedule for measles immunization, based on changes in epidemiology of the disease and improved understanding of the immune response to vaccination since the vaccine became available in 1963. Then they posed the question of whether the recommendation should be revised again.

“Ideally, the schedule should minimize the risk of measles and its complications and optimize vaccine-induced protection,” Dr. McLean and Dr. Orenstein wrote.

They argued that the evidence cannot currently support changing the first MMR dose to a younger age because measles incidence in the United States remains extremely low outside of the extraordinary outbreaks in 2014 and 2019. Further, infants under 12 months of age make up less than 15% of measles cases during outbreaks, and unvaccinated people make up more than 70% of cases.

Rather, they stated, this new study emphasizes the importance of following the current schedule, with consideration of an earlier schedule only warranted during outbreaks.

“Health care providers must work to maintain high levels of coverage with 2 doses of MMR among vaccine-eligible populations and minimize pockets of susceptibility to prevent transmission to infants and prevent reestablishment of endemic transmission,” they concluded.

The research was funded by the Public Health Ontario Project Initiation Fund. The authors had no relevant financial disclosures. The editorialists had no external funding and no relevant financial disclosures.

SOURCE: Science M et al. Pediatrics. 2019 Nov 21. doi: 10.1542/peds.2019-0630.

Infants born in a country with no endemic measles no longer received adequate protection against the disease from maternal antibodies when they were aged 6 months, according to new research.

FatCamera/E+/Getty Images

In fact, most of the 196 infants’ maternal measles antibodies had dropped below the protective threshold by 3 months of age – well before the recommended age of 12-15 months for the first dose of MMR vaccine.

The odds of inadequate protection doubled for each additional month of age, Michelle Science, MD, of the University of Toronto and associates reported in Pediatrics.

“The widening gap between loss of maternal antibodies and measles vaccination described in our study leaves infants vulnerable to measles for much of their infancy and highlights the need for further research to support public health policy,” Dr. Science and colleagues wrote.

The findings are not surprising for a setting in which measles has been eliminated and align with results from past research, Huong Q. McLean, PhD, MPH, of the Marshfield (Wis.) Clinic Research Institute and Walter A. Orenstein, MD, of Emory University in Atlanta wrote in an accompanying editorial (Pediatrics. 2019 Nov 21. doi: 10.1542/peds.2019-2541).

However, this susceptibility prior to receiving the MMR has taken on a new significance more recently, Dr. McLean and Dr. Orenstein suggested.

“In light of increasing measles outbreaks during the past year reaching levels not recorded in the United States since 1992 and increased measles elsewhere, coupled with the risk of severe illness in infants, there is increased concern regarding the protection of infants against measles,” the editorialists wrote.

Dr. Science and colleagues tested serum samples from 196 term infants, all under 12 months old, for antibodies against measles. The sera had been previously collected at a single tertiary care center in Ontario for clinical testing and then stored. Measles has been eliminated in Canada since 1998.

The researchers randomly selected 25 samples for each of eight different age groups: up to 30 days old; 1 month (31-60 days); 2 months (61-89 days); 3 months (90-119 days); 4 months; 5 months; 6-9 months; and 9-11 months.

Just over half the babies (56%) were male, and 35% had an underlying condition, but none had conditions that might affect antibody levels. The conditions were primarily a developmental delay or otherwise affecting the central nervous system, liver, or gastrointestinal function. Mean maternal age was 32 years.

To ensure high test sensitivity, the researchers used the plaque-reduction neutralization test (PRNT) to test for measles-neutralizing antibodies instead of using enzyme-linked immunosorbent assay (ELISA) because “ELISA sensitivity decreases as antibody titers decrease,” Dr. Science and colleagues wrote. They used a neutralization titer of less than 192 mIU/mL as the threshold for protection against measles.

When the researchers calculated the predicted standardized mean antibody titer for infants with a mother aged 32 years, they determined their mean to be 541 mIU/mL at 1 month, 142 mIU/mL at 3 months (below the measles threshold of susceptibility of 192 mIU/mL) , and 64 mIU/mL at 6 months. None of the infants had measles antibodies above the protective threshold at 6 months old, the authors noted.

Children’s odds of susceptibility to measles doubled for each additional month of age, after adjustment for infant sex and maternal age (odds ratio, 2.13). Children’s likelihood of susceptibility to measles modestly increased as maternal age increased in 5-year increments from 25 to 40 years.

Children with an underlying conditions had greater susceptibility to measles (83%), compared with those without a comorbidity (68%, P = .03). No difference in susceptibility existed between males and females or based on gestational age at birth (ranging from 37 to 41 weeks).

The Advisory Committee on Immunization Practices permits measles vaccination “as early as 6 months for infants who plan to travel internationally, infants with ongoing risk for exposure during measles outbreaks and as postexposure prophylaxis,” Dr. McLean and Dr. Orenstein noted in their editorial.

They discussed the rationale for various changes in the recommended schedule for measles immunization, based on changes in epidemiology of the disease and improved understanding of the immune response to vaccination since the vaccine became available in 1963. Then they posed the question of whether the recommendation should be revised again.

“Ideally, the schedule should minimize the risk of measles and its complications and optimize vaccine-induced protection,” Dr. McLean and Dr. Orenstein wrote.

They argued that the evidence cannot currently support changing the first MMR dose to a younger age because measles incidence in the United States remains extremely low outside of the extraordinary outbreaks in 2014 and 2019. Further, infants under 12 months of age make up less than 15% of measles cases during outbreaks, and unvaccinated people make up more than 70% of cases.

Rather, they stated, this new study emphasizes the importance of following the current schedule, with consideration of an earlier schedule only warranted during outbreaks.

“Health care providers must work to maintain high levels of coverage with 2 doses of MMR among vaccine-eligible populations and minimize pockets of susceptibility to prevent transmission to infants and prevent reestablishment of endemic transmission,” they concluded.

The research was funded by the Public Health Ontario Project Initiation Fund. The authors had no relevant financial disclosures. The editorialists had no external funding and no relevant financial disclosures.

SOURCE: Science M et al. Pediatrics. 2019 Nov 21. doi: 10.1542/peds.2019-0630.

Infants born in a country with no endemic measles no longer received adequate protection against the disease from maternal antibodies when they were aged 6 months, according to new research.

FatCamera/E+/Getty Images

In fact, most of the 196 infants’ maternal measles antibodies had dropped below the protective threshold by 3 months of age – well before the recommended age of 12-15 months for the first dose of MMR vaccine.

The odds of inadequate protection doubled for each additional month of age, Michelle Science, MD, of the University of Toronto and associates reported in Pediatrics.

“The widening gap between loss of maternal antibodies and measles vaccination described in our study leaves infants vulnerable to measles for much of their infancy and highlights the need for further research to support public health policy,” Dr. Science and colleagues wrote.

The findings are not surprising for a setting in which measles has been eliminated and align with results from past research, Huong Q. McLean, PhD, MPH, of the Marshfield (Wis.) Clinic Research Institute and Walter A. Orenstein, MD, of Emory University in Atlanta wrote in an accompanying editorial (Pediatrics. 2019 Nov 21. doi: 10.1542/peds.2019-2541).

However, this susceptibility prior to receiving the MMR has taken on a new significance more recently, Dr. McLean and Dr. Orenstein suggested.

“In light of increasing measles outbreaks during the past year reaching levels not recorded in the United States since 1992 and increased measles elsewhere, coupled with the risk of severe illness in infants, there is increased concern regarding the protection of infants against measles,” the editorialists wrote.

Dr. Science and colleagues tested serum samples from 196 term infants, all under 12 months old, for antibodies against measles. The sera had been previously collected at a single tertiary care center in Ontario for clinical testing and then stored. Measles has been eliminated in Canada since 1998.

The researchers randomly selected 25 samples for each of eight different age groups: up to 30 days old; 1 month (31-60 days); 2 months (61-89 days); 3 months (90-119 days); 4 months; 5 months; 6-9 months; and 9-11 months.

Just over half the babies (56%) were male, and 35% had an underlying condition, but none had conditions that might affect antibody levels. The conditions were primarily a developmental delay or otherwise affecting the central nervous system, liver, or gastrointestinal function. Mean maternal age was 32 years.

To ensure high test sensitivity, the researchers used the plaque-reduction neutralization test (PRNT) to test for measles-neutralizing antibodies instead of using enzyme-linked immunosorbent assay (ELISA) because “ELISA sensitivity decreases as antibody titers decrease,” Dr. Science and colleagues wrote. They used a neutralization titer of less than 192 mIU/mL as the threshold for protection against measles.

When the researchers calculated the predicted standardized mean antibody titer for infants with a mother aged 32 years, they determined their mean to be 541 mIU/mL at 1 month, 142 mIU/mL at 3 months (below the measles threshold of susceptibility of 192 mIU/mL) , and 64 mIU/mL at 6 months. None of the infants had measles antibodies above the protective threshold at 6 months old, the authors noted.

Children’s odds of susceptibility to measles doubled for each additional month of age, after adjustment for infant sex and maternal age (odds ratio, 2.13). Children’s likelihood of susceptibility to measles modestly increased as maternal age increased in 5-year increments from 25 to 40 years.

Children with an underlying conditions had greater susceptibility to measles (83%), compared with those without a comorbidity (68%, P = .03). No difference in susceptibility existed between males and females or based on gestational age at birth (ranging from 37 to 41 weeks).

The Advisory Committee on Immunization Practices permits measles vaccination “as early as 6 months for infants who plan to travel internationally, infants with ongoing risk for exposure during measles outbreaks and as postexposure prophylaxis,” Dr. McLean and Dr. Orenstein noted in their editorial.

They discussed the rationale for various changes in the recommended schedule for measles immunization, based on changes in epidemiology of the disease and improved understanding of the immune response to vaccination since the vaccine became available in 1963. Then they posed the question of whether the recommendation should be revised again.

“Ideally, the schedule should minimize the risk of measles and its complications and optimize vaccine-induced protection,” Dr. McLean and Dr. Orenstein wrote.

They argued that the evidence cannot currently support changing the first MMR dose to a younger age because measles incidence in the United States remains extremely low outside of the extraordinary outbreaks in 2014 and 2019. Further, infants under 12 months of age make up less than 15% of measles cases during outbreaks, and unvaccinated people make up more than 70% of cases.

Rather, they stated, this new study emphasizes the importance of following the current schedule, with consideration of an earlier schedule only warranted during outbreaks.

“Health care providers must work to maintain high levels of coverage with 2 doses of MMR among vaccine-eligible populations and minimize pockets of susceptibility to prevent transmission to infants and prevent reestablishment of endemic transmission,” they concluded.

The research was funded by the Public Health Ontario Project Initiation Fund. The authors had no relevant financial disclosures. The editorialists had no external funding and no relevant financial disclosures.

SOURCE: Science M et al. Pediatrics. 2019 Nov 21. doi: 10.1542/peds.2019-0630.

WASHINGTON – Evidence continues to mount that infants born to moms infected with Zika virus during pregnancy can have neurodevelopmental abnormalities as they age even if they showed no defects at birth, based on follow-up of 890 Colombian children tracked by epidemiologists from the U.S. Centers for Disease Control and Prevention.

Among the 890 neonates born to mothers apparently infected with Zika during pregnancy and followed for up to 2 years, 40 of the 852 (5%) without a detectable birth defect at delivery went on to show some type of neurodevelopmental sequelae during up to 24 months of age, Margaret Honein, PhD, said at an annual scientific meeting on infectious diseases.

In addition, among the children without birth defects at delivery who received follow-up examinations out to about 2 years, the incidence of “alerts” for possible neurodevelopmental issues was 15%-20% for each of the four domains studied (gross motor, fine motor, hearing and language, and personal and social functions), said Dr. Honein, an epidemiologist and chief of the birth defects branch of the CDC. In contrast, 17 of the 38 children (45%) followed who had identifiable birth defects at delivery also showed neurodevelopmental abnormalities when reexamined as long as 2 years after birth. These possible neurodevelopmental abnormalities, designated as alerts, were identified in comparison with a contemporaneous cohort of children born to uninfected mothers in the same regions of Colombia and assessed by the CDC researchers.

This cohort of children born to mothers who became infected with Zika virus during the 2016 Colombian epidemic will not undergo any planned, additional follow-up beyond the initial 2 years, Dr. Honein noted.

The findings she reported were consistent with observations from a much smaller cohort of 70 infants born to Colombian mothers infected with Zika virus while pregnant who had a normal head circumference and a normal clinical examination at delivery. When assessed once or twice 4-18 months after birth, these 70 infants showed an overall greater than one standard deviation (z-score) drop in their scores on the Warner Initial Developmental Evaluation of Adaptive and Functional Skills (WIDEA) metric by 12 months after birth and continuing out to 18 months, said Sarah B. Mulkey, MD, a fetal-neonatal neurologist at Children’s National Health System in Washington. These deficits were especially pronounced in the mobility and social cognition domains of the four-domain WIDEA metric. The social cognition domain is an important predictor of later problems with executive function and other neurologic disorders, Dr. Mulkey said while reporting her findings in a separate talk at the meeting. She acknowledged that the analysis was flawed by comparing the WIDEA outcomes of the Zika virus–exposed children to healthy children from either inner-city Chicago or Canada. Dr. Mulkey said that she and her associates plan to characterize a population of Zika virus–unexposed children in Colombia to use for future comparisons.

The study reported by Dr. Honein involved an enhanced surveillance program launched by the CDC in 2016 in three regions of Colombia and included 1,190 pregnancies accompanied by Zika symptoms in the mother and with a reported pregnancy outcome, including 1,185 live births. Nearly half of the Zika infections occurred during the first trimester, and 34% occurred during the second trimester. However, fewer than a third of the pregnant women underwent some type of laboratory testing to confirm their infection, either by serology or by a DNA-based assay, and of these 28% had a positive finding. Dr. Honein cautioned that many of the specimens that tested negative for Zika virus may have been false negatives.

The birth defects identified among the infants born from an apparently affected pregnancy included brain abnormalities, eye anomalies, and microcephaly, with 5% of the 1,185 live births showing one or more of these outcomes. The neurodevelopmental deficits identified during follow-up of 890 of the children out to 2 years included seizures; abnormalities of tone, movement, or swallowing; and impairments of vision or hearing.

mzoler@mdedge.com

WASHINGTON – Evidence continues to mount that infants born to moms infected with Zika virus during pregnancy can have neurodevelopmental abnormalities as they age even if they showed no defects at birth, based on follow-up of 890 Colombian children tracked by epidemiologists from the U.S. Centers for Disease Control and Prevention.

Among the 890 neonates born to mothers apparently infected with Zika during pregnancy and followed for up to 2 years, 40 of the 852 (5%) without a detectable birth defect at delivery went on to show some type of neurodevelopmental sequelae during up to 24 months of age, Margaret Honein, PhD, said at an annual scientific meeting on infectious diseases.

In addition, among the children without birth defects at delivery who received follow-up examinations out to about 2 years, the incidence of “alerts” for possible neurodevelopmental issues was 15%-20% for each of the four domains studied (gross motor, fine motor, hearing and language, and personal and social functions), said Dr. Honein, an epidemiologist and chief of the birth defects branch of the CDC. In contrast, 17 of the 38 children (45%) followed who had identifiable birth defects at delivery also showed neurodevelopmental abnormalities when reexamined as long as 2 years after birth. These possible neurodevelopmental abnormalities, designated as alerts, were identified in comparison with a contemporaneous cohort of children born to uninfected mothers in the same regions of Colombia and assessed by the CDC researchers.

This cohort of children born to mothers who became infected with Zika virus during the 2016 Colombian epidemic will not undergo any planned, additional follow-up beyond the initial 2 years, Dr. Honein noted.

The findings she reported were consistent with observations from a much smaller cohort of 70 infants born to Colombian mothers infected with Zika virus while pregnant who had a normal head circumference and a normal clinical examination at delivery. When assessed once or twice 4-18 months after birth, these 70 infants showed an overall greater than one standard deviation (z-score) drop in their scores on the Warner Initial Developmental Evaluation of Adaptive and Functional Skills (WIDEA) metric by 12 months after birth and continuing out to 18 months, said Sarah B. Mulkey, MD, a fetal-neonatal neurologist at Children’s National Health System in Washington. These deficits were especially pronounced in the mobility and social cognition domains of the four-domain WIDEA metric. The social cognition domain is an important predictor of later problems with executive function and other neurologic disorders, Dr. Mulkey said while reporting her findings in a separate talk at the meeting. She acknowledged that the analysis was flawed by comparing the WIDEA outcomes of the Zika virus–exposed children to healthy children from either inner-city Chicago or Canada. Dr. Mulkey said that she and her associates plan to characterize a population of Zika virus–unexposed children in Colombia to use for future comparisons.

The study reported by Dr. Honein involved an enhanced surveillance program launched by the CDC in 2016 in three regions of Colombia and included 1,190 pregnancies accompanied by Zika symptoms in the mother and with a reported pregnancy outcome, including 1,185 live births. Nearly half of the Zika infections occurred during the first trimester, and 34% occurred during the second trimester. However, fewer than a third of the pregnant women underwent some type of laboratory testing to confirm their infection, either by serology or by a DNA-based assay, and of these 28% had a positive finding. Dr. Honein cautioned that many of the specimens that tested negative for Zika virus may have been false negatives.

The birth defects identified among the infants born from an apparently affected pregnancy included brain abnormalities, eye anomalies, and microcephaly, with 5% of the 1,185 live births showing one or more of these outcomes. The neurodevelopmental deficits identified during follow-up of 890 of the children out to 2 years included seizures; abnormalities of tone, movement, or swallowing; and impairments of vision or hearing.

mzoler@mdedge.com

WASHINGTON – Evidence continues to mount that infants born to moms infected with Zika virus during pregnancy can have neurodevelopmental abnormalities as they age even if they showed no defects at birth, based on follow-up of 890 Colombian children tracked by epidemiologists from the U.S. Centers for Disease Control and Prevention.

Among the 890 neonates born to mothers apparently infected with Zika during pregnancy and followed for up to 2 years, 40 of the 852 (5%) without a detectable birth defect at delivery went on to show some type of neurodevelopmental sequelae during up to 24 months of age, Margaret Honein, PhD, said at an annual scientific meeting on infectious diseases.

In addition, among the children without birth defects at delivery who received follow-up examinations out to about 2 years, the incidence of “alerts” for possible neurodevelopmental issues was 15%-20% for each of the four domains studied (gross motor, fine motor, hearing and language, and personal and social functions), said Dr. Honein, an epidemiologist and chief of the birth defects branch of the CDC. In contrast, 17 of the 38 children (45%) followed who had identifiable birth defects at delivery also showed neurodevelopmental abnormalities when reexamined as long as 2 years after birth. These possible neurodevelopmental abnormalities, designated as alerts, were identified in comparison with a contemporaneous cohort of children born to uninfected mothers in the same regions of Colombia and assessed by the CDC researchers.

This cohort of children born to mothers who became infected with Zika virus during the 2016 Colombian epidemic will not undergo any planned, additional follow-up beyond the initial 2 years, Dr. Honein noted.

The findings she reported were consistent with observations from a much smaller cohort of 70 infants born to Colombian mothers infected with Zika virus while pregnant who had a normal head circumference and a normal clinical examination at delivery. When assessed once or twice 4-18 months after birth, these 70 infants showed an overall greater than one standard deviation (z-score) drop in their scores on the Warner Initial Developmental Evaluation of Adaptive and Functional Skills (WIDEA) metric by 12 months after birth and continuing out to 18 months, said Sarah B. Mulkey, MD, a fetal-neonatal neurologist at Children’s National Health System in Washington. These deficits were especially pronounced in the mobility and social cognition domains of the four-domain WIDEA metric. The social cognition domain is an important predictor of later problems with executive function and other neurologic disorders, Dr. Mulkey said while reporting her findings in a separate talk at the meeting. She acknowledged that the analysis was flawed by comparing the WIDEA outcomes of the Zika virus–exposed children to healthy children from either inner-city Chicago or Canada. Dr. Mulkey said that she and her associates plan to characterize a population of Zika virus–unexposed children in Colombia to use for future comparisons.

The study reported by Dr. Honein involved an enhanced surveillance program launched by the CDC in 2016 in three regions of Colombia and included 1,190 pregnancies accompanied by Zika symptoms in the mother and with a reported pregnancy outcome, including 1,185 live births. Nearly half of the Zika infections occurred during the first trimester, and 34% occurred during the second trimester. However, fewer than a third of the pregnant women underwent some type of laboratory testing to confirm their infection, either by serology or by a DNA-based assay, and of these 28% had a positive finding. Dr. Honein cautioned that many of the specimens that tested negative for Zika virus may have been false negatives.

The birth defects identified among the infants born from an apparently affected pregnancy included brain abnormalities, eye anomalies, and microcephaly, with 5% of the 1,185 live births showing one or more of these outcomes. The neurodevelopmental deficits identified during follow-up of 890 of the children out to 2 years included seizures; abnormalities of tone, movement, or swallowing; and impairments of vision or hearing.

mzoler@mdedge.com

Maternal weight gains at either end of the weight spectrum may influence the risk of poor neonatal outcomes for twins, Lisa M. Bodnar, PhD, and colleagues determined.

anopdesignstock/Thinkstock

The risks of cesarean section and neonatal death were elevated for those mothers who were overweight before pregnancy and then gained too much. But infants of underweight women who didn’t gain enough faced risks as well, wrote Dr. Bodnar of the University of Pittsburgh and associates in Obstetrics & Gynecology.

Among the most severely overweight women (obesity grade 2 or 3) who gained the most weight (43 kg) at 37 weeks’ gestation, there were 6 fewer small-for-gestational-age (SGA) infants per 100 births, but 14 more large-for-gestational-age (LGA) infants, 4 more cesarean deliveries, and 2 more neonatal deaths per 100 births. By contrast, among the most severely underweight women who gained the least amount of weight (9 kg), there were 18 more SGA infants, 3 fewer LGA infants, and 11 fewer cesareans, but 6 more preterm births before 32 weeks’ gestation.

The same U-shaped pattern also occurred within the individual weight categories. For example, compared with the outcomes among the most underweight women who gained least, among underweight women who gained the most (37 kg), there were eight fewer SGA infants, but four more LGA infants, 16 excess preterm births, and 9 excess infant deaths.

“If the associations we observed are even partially reflective of causality, targeted modification of pregnancy weight gain in women carrying twins might improve pregnancy outcomes,” wrote Dr. Bodnar and her team. “Data on a wide range of short- and long-term outcomes and information on the relative seriousness of these outcomes are needed to determine optimal gestational weight gain ranges for twin pregnancies.”

The cohort comprised 54,836 live-born twins from 27,723 twin pregnancies who were included in the MOMs database maintained by the University of Pennsylvania, Philadelphia. The population-based study tracks maternal obesity, gestational weight gain, and adverse birth outcomes. The information came from infant birth and death vital statistics records from 2003 to 2013.

However, this very source puts the findings in some degree of uncertainty, Ozhan Turan, MD, said in an interview.

“It’s a very nice study, and the statistics are very well done,” said Dr. Turan, who is the director of fetal therapy and complex obstetric surgery at the University of Maryland School of Medicine. “But that kind of data has pitfalls that are unavoidable. For example, they don’t have access to maternal medical comorbidities which are mostly related to the outcome, particularly gestational diabetes and preeclampsia. They also don’t have the information on chorionicity – and we know that monochorionic twins face much greater risk for these outcomes than dichorionic twins.”

The investigators calculated total gestational weight gain by subtracting prepregnancy weight from maternal weight at delivery. The analysis controlled for race and ethnicity, education, neonatal care, level of birth facility, parity, payment at delivery, smoking during pregnancy, marital status, year of birth, height, maternal age, preexisting diabetes or hypertension, infertility treatment, neonatal sex, and racial composition of neighborhood, as a proxy of neighborhood-level socioeconomic status. Approximately 16% of mothers received infertility treatment.

Of the cohort, 3% were underweight, 48% were normal weight, 24% were overweight, 13% were grade 1 obese, 7% grade 2 obese, and 5% grade 3 obese.

“Pregnancy weight gain was negatively associated with SGA and positively associated with LGA and cesarean delivery in all [body mass index] groups. For example, among normal-weight women, compared with a pregnancy weight gain equivalent to 20 kg at 37 weeks’ of gestation, a weight gain of 27 kg at 37 weeks’ of gestation was associated with 2.2 fewer cases of SGA but 2.9 more cases of LGA and 3.7 more cases of cesarean delivery,” Dr. Bodnar and associates wrote.

The investigators found that “weight gains well above or well below the [Institute of Medicine] provisional guidelines (less than 14 kg or more than 27 kg in underweight or normal-weight women, less than 11 kg or more than 28 kg in overweight women, and less than 6.4 kg or more than 26 kg in women with obesity) were associated with the highest risk of adverse outcomes.”

“I would not say this is practice-changing information,” said Dr. Turan. “We already know all this. What would be very helpful is an algorithm to tell us, if a patient is pregnant with twins, this is the amount of weight you have to gain.”

For overweight patients, Dr. Turan tries to impart the key message of moderate or slight weight gain, according to prepregnancy body mass index. For underweight patients, the picture is a bit more complex.

“There are not that many who are underweight before pregnancy, so first thing I look for is the reason a woman is underweight. Is she just not eating properly? Is there a drug dependence issue, alcohol dependence, HIV? Is there smoking? A gut problem that causes malnutrition. You can’t just say ‘eat more.’ That does not solve the problem. We need to find out why she is underweight and fix that first,” said Dr. Turan.

Neither Dr. Bodnar nor Dr. Turan had any relevant financial disclosures. One coauthor disclosed her institution received funds from the University of Pittsburgh. The study was funded by National Institutes of Health grants.
 

SOURCE: Bodnar LM et al. Obstet Gynecol. 2019;134:1075-86.

Maternal weight gains at either end of the weight spectrum may influence the risk of poor neonatal outcomes for twins, Lisa M. Bodnar, PhD, and colleagues determined.

anopdesignstock/Thinkstock

The risks of cesarean section and neonatal death were elevated for those mothers who were overweight before pregnancy and then gained too much. But infants of underweight women who didn’t gain enough faced risks as well, wrote Dr. Bodnar of the University of Pittsburgh and associates in Obstetrics & Gynecology.

Among the most severely overweight women (obesity grade 2 or 3) who gained the most weight (43 kg) at 37 weeks’ gestation, there were 6 fewer small-for-gestational-age (SGA) infants per 100 births, but 14 more large-for-gestational-age (LGA) infants, 4 more cesarean deliveries, and 2 more neonatal deaths per 100 births. By contrast, among the most severely underweight women who gained the least amount of weight (9 kg), there were 18 more SGA infants, 3 fewer LGA infants, and 11 fewer cesareans, but 6 more preterm births before 32 weeks’ gestation.

The same U-shaped pattern also occurred within the individual weight categories. For example, compared with the outcomes among the most underweight women who gained least, among underweight women who gained the most (37 kg), there were eight fewer SGA infants, but four more LGA infants, 16 excess preterm births, and 9 excess infant deaths.

“If the associations we observed are even partially reflective of causality, targeted modification of pregnancy weight gain in women carrying twins might improve pregnancy outcomes,” wrote Dr. Bodnar and her team. “Data on a wide range of short- and long-term outcomes and information on the relative seriousness of these outcomes are needed to determine optimal gestational weight gain ranges for twin pregnancies.”

The cohort comprised 54,836 live-born twins from 27,723 twin pregnancies who were included in the MOMs database maintained by the University of Pennsylvania, Philadelphia. The population-based study tracks maternal obesity, gestational weight gain, and adverse birth outcomes. The information came from infant birth and death vital statistics records from 2003 to 2013.

However, this very source puts the findings in some degree of uncertainty, Ozhan Turan, MD, said in an interview.

“It’s a very nice study, and the statistics are very well done,” said Dr. Turan, who is the director of fetal therapy and complex obstetric surgery at the University of Maryland School of Medicine. “But that kind of data has pitfalls that are unavoidable. For example, they don’t have access to maternal medical comorbidities which are mostly related to the outcome, particularly gestational diabetes and preeclampsia. They also don’t have the information on chorionicity – and we know that monochorionic twins face much greater risk for these outcomes than dichorionic twins.”

The investigators calculated total gestational weight gain by subtracting prepregnancy weight from maternal weight at delivery. The analysis controlled for race and ethnicity, education, neonatal care, level of birth facility, parity, payment at delivery, smoking during pregnancy, marital status, year of birth, height, maternal age, preexisting diabetes or hypertension, infertility treatment, neonatal sex, and racial composition of neighborhood, as a proxy of neighborhood-level socioeconomic status. Approximately 16% of mothers received infertility treatment.

Of the cohort, 3% were underweight, 48% were normal weight, 24% were overweight, 13% were grade 1 obese, 7% grade 2 obese, and 5% grade 3 obese.

“Pregnancy weight gain was negatively associated with SGA and positively associated with LGA and cesarean delivery in all [body mass index] groups. For example, among normal-weight women, compared with a pregnancy weight gain equivalent to 20 kg at 37 weeks’ of gestation, a weight gain of 27 kg at 37 weeks’ of gestation was associated with 2.2 fewer cases of SGA but 2.9 more cases of LGA and 3.7 more cases of cesarean delivery,” Dr. Bodnar and associates wrote.

The investigators found that “weight gains well above or well below the [Institute of Medicine] provisional guidelines (less than 14 kg or more than 27 kg in underweight or normal-weight women, less than 11 kg or more than 28 kg in overweight women, and less than 6.4 kg or more than 26 kg in women with obesity) were associated with the highest risk of adverse outcomes.”

“I would not say this is practice-changing information,” said Dr. Turan. “We already know all this. What would be very helpful is an algorithm to tell us, if a patient is pregnant with twins, this is the amount of weight you have to gain.”

For overweight patients, Dr. Turan tries to impart the key message of moderate or slight weight gain, according to prepregnancy body mass index. For underweight patients, the picture is a bit more complex.

“There are not that many who are underweight before pregnancy, so first thing I look for is the reason a woman is underweight. Is she just not eating properly? Is there a drug dependence issue, alcohol dependence, HIV? Is there smoking? A gut problem that causes malnutrition. You can’t just say ‘eat more.’ That does not solve the problem. We need to find out why she is underweight and fix that first,” said Dr. Turan.

Neither Dr. Bodnar nor Dr. Turan had any relevant financial disclosures. One coauthor disclosed her institution received funds from the University of Pittsburgh. The study was funded by National Institutes of Health grants.
 

SOURCE: Bodnar LM et al. Obstet Gynecol. 2019;134:1075-86.

Maternal weight gains at either end of the weight spectrum may influence the risk of poor neonatal outcomes for twins, Lisa M. Bodnar, PhD, and colleagues determined.

anopdesignstock/Thinkstock

The risks of cesarean section and neonatal death were elevated for those mothers who were overweight before pregnancy and then gained too much. But infants of underweight women who didn’t gain enough faced risks as well, wrote Dr. Bodnar of the University of Pittsburgh and associates in Obstetrics & Gynecology.

Among the most severely overweight women (obesity grade 2 or 3) who gained the most weight (43 kg) at 37 weeks’ gestation, there were 6 fewer small-for-gestational-age (SGA) infants per 100 births, but 14 more large-for-gestational-age (LGA) infants, 4 more cesarean deliveries, and 2 more neonatal deaths per 100 births. By contrast, among the most severely underweight women who gained the least amount of weight (9 kg), there were 18 more SGA infants, 3 fewer LGA infants, and 11 fewer cesareans, but 6 more preterm births before 32 weeks’ gestation.

The same U-shaped pattern also occurred within the individual weight categories. For example, compared with the outcomes among the most underweight women who gained least, among underweight women who gained the most (37 kg), there were eight fewer SGA infants, but four more LGA infants, 16 excess preterm births, and 9 excess infant deaths.

“If the associations we observed are even partially reflective of causality, targeted modification of pregnancy weight gain in women carrying twins might improve pregnancy outcomes,” wrote Dr. Bodnar and her team. “Data on a wide range of short- and long-term outcomes and information on the relative seriousness of these outcomes are needed to determine optimal gestational weight gain ranges for twin pregnancies.”

The cohort comprised 54,836 live-born twins from 27,723 twin pregnancies who were included in the MOMs database maintained by the University of Pennsylvania, Philadelphia. The population-based study tracks maternal obesity, gestational weight gain, and adverse birth outcomes. The information came from infant birth and death vital statistics records from 2003 to 2013.

However, this very source puts the findings in some degree of uncertainty, Ozhan Turan, MD, said in an interview.

“It’s a very nice study, and the statistics are very well done,” said Dr. Turan, who is the director of fetal therapy and complex obstetric surgery at the University of Maryland School of Medicine. “But that kind of data has pitfalls that are unavoidable. For example, they don’t have access to maternal medical comorbidities which are mostly related to the outcome, particularly gestational diabetes and preeclampsia. They also don’t have the information on chorionicity – and we know that monochorionic twins face much greater risk for these outcomes than dichorionic twins.”

The investigators calculated total gestational weight gain by subtracting prepregnancy weight from maternal weight at delivery. The analysis controlled for race and ethnicity, education, neonatal care, level of birth facility, parity, payment at delivery, smoking during pregnancy, marital status, year of birth, height, maternal age, preexisting diabetes or hypertension, infertility treatment, neonatal sex, and racial composition of neighborhood, as a proxy of neighborhood-level socioeconomic status. Approximately 16% of mothers received infertility treatment.

Of the cohort, 3% were underweight, 48% were normal weight, 24% were overweight, 13% were grade 1 obese, 7% grade 2 obese, and 5% grade 3 obese.

“Pregnancy weight gain was negatively associated with SGA and positively associated with LGA and cesarean delivery in all [body mass index] groups. For example, among normal-weight women, compared with a pregnancy weight gain equivalent to 20 kg at 37 weeks’ of gestation, a weight gain of 27 kg at 37 weeks’ of gestation was associated with 2.2 fewer cases of SGA but 2.9 more cases of LGA and 3.7 more cases of cesarean delivery,” Dr. Bodnar and associates wrote.

The investigators found that “weight gains well above or well below the [Institute of Medicine] provisional guidelines (less than 14 kg or more than 27 kg in underweight or normal-weight women, less than 11 kg or more than 28 kg in overweight women, and less than 6.4 kg or more than 26 kg in women with obesity) were associated with the highest risk of adverse outcomes.”

“I would not say this is practice-changing information,” said Dr. Turan. “We already know all this. What would be very helpful is an algorithm to tell us, if a patient is pregnant with twins, this is the amount of weight you have to gain.”

For overweight patients, Dr. Turan tries to impart the key message of moderate or slight weight gain, according to prepregnancy body mass index. For underweight patients, the picture is a bit more complex.

“There are not that many who are underweight before pregnancy, so first thing I look for is the reason a woman is underweight. Is she just not eating properly? Is there a drug dependence issue, alcohol dependence, HIV? Is there smoking? A gut problem that causes malnutrition. You can’t just say ‘eat more.’ That does not solve the problem. We need to find out why she is underweight and fix that first,” said Dr. Turan.

Neither Dr. Bodnar nor Dr. Turan had any relevant financial disclosures. One coauthor disclosed her institution received funds from the University of Pittsburgh. The study was funded by National Institutes of Health grants.
 

SOURCE: Bodnar LM et al. Obstet Gynecol. 2019;134:1075-86.

Feeding preterm or low-birth-weight infants a faster increment of daily milk does not appear to increase their risk of developing adverse outcomes, including moderate or severe neurodevelopmental disability and necrotizing enterocolitis, according to recent research published in the New England Journal of Medicine.

Photodisc/Thinkstockphotos.com

Although some data have shown rapidly increasing the speed of enteral-feeding volumes for preterm infants can raise the risk of necrotizing enterocolitis, these data are from observational case-control and uncontrolled studies, said Jon Dorling, MD, of the division of neonatal–perinatal medicine at Dalhousie University in Halifax, N.S., and colleagues in their study.

Dr. Doring and colleagues randomized 2,804 infants who were either very preterm or with a very low birth weight to receive daily milk increments at different volumes until the infants reached full feeding volume. Infants in the faster-increment group received daily milk at 30 mL per kg of body weight, while the slower-increment group received 18 mL per kg of body weight each day. The researchers analyzed infant survival without moderate or severe neurodevelopmental disability, with secondary outcomes of sepsis, necrotizing enterocolitis, and cerebral palsy at 24 months.

Overall, the researchers had information on the primary outcome for 87.4% of infants in the faster-increment group and 88.7% of infants in the slower-increment group. They found that 65.5% of infants in the faster-increment group and 68.1% of infants in the slower-increment group achieved an outcome of survival without moderate or severe neurodevelopmental disability at 24 months (adjusted risk ratio, 0.96; 95% confidence interval, 0.92-1.01; P equals .16). Secondary outcomes showed similar rates of adverse outcomes in the two groups, with 29.8% of infants in the faster-increment group and 31.1% of infants in the slower-increment group developing late-onset sepsis (aRR, 0.96; 95% CI, 0.86-1.07). Infants in the faster-increment group also had a similar rate of necrotizing enterocolitis (5.0%), compared with infants in the slower-increment group (5.6%) (aRR, 0.88; 95% CI, 0.68-1.16). Motor impairment was higher among infants in the faster-increment group (7.5%), compared with the slow-increment group (5.0%).

In the faster-increment group, the median number of days to reach full milk-feeding volumes was 7 vs. 10 in the slower-increment group.

“Although these feeding outcomes seem to favor faster increments, the risk of moderate or severe motor impairment was unexpectedly higher in the faster-increment group than in the slower-increment group,” the researchers said. “This observation is unexplained, and there were not more cases of late-onset sepsis or necrotizing enterocolitis in the faster-increment group.”

It is possible that it is a chance finding, since it was one of multiple secondary outcomes assessed, but biologically plausible explanations include increased cardiorespiratory events from pressure on the diaphragm or inability to absorb enteral nutrition,” they added.

The researchers said one potential limitation of the study was that it was unblinded.

This study was funded by the Health Technology Assessment Programme of the National Institute for Health Research. The authors reported various relationships with Baxter Bioscience, Chiesi Farmaceutici, Danone Early Life Nutrition, Fresenius Kabi USA LLC, National Institute for Health Research, Nestle Nutrition Institute, Nutrina, Medical Research Council, and Prolacta Biosciences in the form of consultancies, grants, travel reimbursement, board memberships, and editorial board appointments.

SOURCE: Doring J et al. N Eng J Med. 2019. doi: 10.1056/NEJMoa1816654.

Feeding preterm or low-birth-weight infants a faster increment of daily milk does not appear to increase their risk of developing adverse outcomes, including moderate or severe neurodevelopmental disability and necrotizing enterocolitis, according to recent research published in the New England Journal of Medicine.

Photodisc/Thinkstockphotos.com

Although some data have shown rapidly increasing the speed of enteral-feeding volumes for preterm infants can raise the risk of necrotizing enterocolitis, these data are from observational case-control and uncontrolled studies, said Jon Dorling, MD, of the division of neonatal–perinatal medicine at Dalhousie University in Halifax, N.S., and colleagues in their study.

Dr. Doring and colleagues randomized 2,804 infants who were either very preterm or with a very low birth weight to receive daily milk increments at different volumes until the infants reached full feeding volume. Infants in the faster-increment group received daily milk at 30 mL per kg of body weight, while the slower-increment group received 18 mL per kg of body weight each day. The researchers analyzed infant survival without moderate or severe neurodevelopmental disability, with secondary outcomes of sepsis, necrotizing enterocolitis, and cerebral palsy at 24 months.

Overall, the researchers had information on the primary outcome for 87.4% of infants in the faster-increment group and 88.7% of infants in the slower-increment group. They found that 65.5% of infants in the faster-increment group and 68.1% of infants in the slower-increment group achieved an outcome of survival without moderate or severe neurodevelopmental disability at 24 months (adjusted risk ratio, 0.96; 95% confidence interval, 0.92-1.01; P equals .16). Secondary outcomes showed similar rates of adverse outcomes in the two groups, with 29.8% of infants in the faster-increment group and 31.1% of infants in the slower-increment group developing late-onset sepsis (aRR, 0.96; 95% CI, 0.86-1.07). Infants in the faster-increment group also had a similar rate of necrotizing enterocolitis (5.0%), compared with infants in the slower-increment group (5.6%) (aRR, 0.88; 95% CI, 0.68-1.16). Motor impairment was higher among infants in the faster-increment group (7.5%), compared with the slow-increment group (5.0%).

In the faster-increment group, the median number of days to reach full milk-feeding volumes was 7 vs. 10 in the slower-increment group.

“Although these feeding outcomes seem to favor faster increments, the risk of moderate or severe motor impairment was unexpectedly higher in the faster-increment group than in the slower-increment group,” the researchers said. “This observation is unexplained, and there were not more cases of late-onset sepsis or necrotizing enterocolitis in the faster-increment group.”

It is possible that it is a chance finding, since it was one of multiple secondary outcomes assessed, but biologically plausible explanations include increased cardiorespiratory events from pressure on the diaphragm or inability to absorb enteral nutrition,” they added.

The researchers said one potential limitation of the study was that it was unblinded.

This study was funded by the Health Technology Assessment Programme of the National Institute for Health Research. The authors reported various relationships with Baxter Bioscience, Chiesi Farmaceutici, Danone Early Life Nutrition, Fresenius Kabi USA LLC, National Institute for Health Research, Nestle Nutrition Institute, Nutrina, Medical Research Council, and Prolacta Biosciences in the form of consultancies, grants, travel reimbursement, board memberships, and editorial board appointments.

SOURCE: Doring J et al. N Eng J Med. 2019. doi: 10.1056/NEJMoa1816654.

Feeding preterm or low-birth-weight infants a faster increment of daily milk does not appear to increase their risk of developing adverse outcomes, including moderate or severe neurodevelopmental disability and necrotizing enterocolitis, according to recent research published in the New England Journal of Medicine.

Photodisc/Thinkstockphotos.com

Although some data have shown rapidly increasing the speed of enteral-feeding volumes for preterm infants can raise the risk of necrotizing enterocolitis, these data are from observational case-control and uncontrolled studies, said Jon Dorling, MD, of the division of neonatal–perinatal medicine at Dalhousie University in Halifax, N.S., and colleagues in their study.

Dr. Doring and colleagues randomized 2,804 infants who were either very preterm or with a very low birth weight to receive daily milk increments at different volumes until the infants reached full feeding volume. Infants in the faster-increment group received daily milk at 30 mL per kg of body weight, while the slower-increment group received 18 mL per kg of body weight each day. The researchers analyzed infant survival without moderate or severe neurodevelopmental disability, with secondary outcomes of sepsis, necrotizing enterocolitis, and cerebral palsy at 24 months.

Overall, the researchers had information on the primary outcome for 87.4% of infants in the faster-increment group and 88.7% of infants in the slower-increment group. They found that 65.5% of infants in the faster-increment group and 68.1% of infants in the slower-increment group achieved an outcome of survival without moderate or severe neurodevelopmental disability at 24 months (adjusted risk ratio, 0.96; 95% confidence interval, 0.92-1.01; P equals .16). Secondary outcomes showed similar rates of adverse outcomes in the two groups, with 29.8% of infants in the faster-increment group and 31.1% of infants in the slower-increment group developing late-onset sepsis (aRR, 0.96; 95% CI, 0.86-1.07). Infants in the faster-increment group also had a similar rate of necrotizing enterocolitis (5.0%), compared with infants in the slower-increment group (5.6%) (aRR, 0.88; 95% CI, 0.68-1.16). Motor impairment was higher among infants in the faster-increment group (7.5%), compared with the slow-increment group (5.0%).

In the faster-increment group, the median number of days to reach full milk-feeding volumes was 7 vs. 10 in the slower-increment group.

“Although these feeding outcomes seem to favor faster increments, the risk of moderate or severe motor impairment was unexpectedly higher in the faster-increment group than in the slower-increment group,” the researchers said. “This observation is unexplained, and there were not more cases of late-onset sepsis or necrotizing enterocolitis in the faster-increment group.”

It is possible that it is a chance finding, since it was one of multiple secondary outcomes assessed, but biologically plausible explanations include increased cardiorespiratory events from pressure on the diaphragm or inability to absorb enteral nutrition,” they added.

The researchers said one potential limitation of the study was that it was unblinded.

This study was funded by the Health Technology Assessment Programme of the National Institute for Health Research. The authors reported various relationships with Baxter Bioscience, Chiesi Farmaceutici, Danone Early Life Nutrition, Fresenius Kabi USA LLC, National Institute for Health Research, Nestle Nutrition Institute, Nutrina, Medical Research Council, and Prolacta Biosciences in the form of consultancies, grants, travel reimbursement, board memberships, and editorial board appointments.

SOURCE: Doring J et al. N Eng J Med. 2019. doi: 10.1056/NEJMoa1816654.

One of the nation’s most preventable diseases is killing newborns in ever-increasing numbers.

Christoph Burgstedt/iStock/Getty Images Plus

Nationwide, 1,306 infants acquired syphilis from their mother in 2018, a 40% rise over 2017, according to federal data released Oct. 8. Seventy-eight of those babies were stillborn, and 16 died after birth.

In California, cases of congenital syphilis – the term used when a mother passes the infection to her baby during pregnancy – continued a stark 7-year climb, to 332 cases, an 18.1% increase from 2017, according to the federal data. Only Texas, Nevada, Louisiana, and Arizona had congenital syphilis rates higher than California’s. Those five states combined made up nearly two-thirds of total cases, although all but 17 states saw increases in their congenital syphilis rates.

The state-by-state numbers were released as part of a broader report from the Centers for Disease Control and Prevention tracking trends in sexually transmitted diseases. Cases of syphilis, gonorrhea, and chlamydia combined reached an all-time high in 2018. Cases of the most infectious stage of syphilis rose 14% to more than 35,000 cases; gonorrhea increased 5% to more than 580,000 cases; and chlamydia increased 3% to more than 1.7 million cases.

For veteran public health workers, the upward trend in congenital syphilis numbers is particularly disturbing because the condition is so easy to prevent. Blood tests can identify infection in pregnant women. The treatment is relatively simple and effective. When caught during pregnancy, transmission from mother to baby generally can be stopped.

“When we see a case of congenital syphilis, it is a hallmark of a health system and a health care failure,” said Virginia Bowen, PhD, an epidemiologist with the CDC and an author of the report.

It takes just a few shots of antibiotics to prevent a baby from getting syphilis from its mother. Left untreated, Treponema pallidum, the corkscrew-shaped organism that causes syphilis, can wiggle its way through a mother’s placenta and into a fetus. Once there, it can multiply furiously, invading every part of the body.

The effects on a newborn can be devastating. Philip Cheng, MD, is a neonatologist at St. Joseph’s Medical Center in Stockton, a city in San Joaquin County in California’s Central Valley. Twenty-six babies were infected last year in San Joaquin County, according to state data.

The brain of one of Cheng’s patients didn’t develop properly and the baby died shortly after birth. Other young patients survive but battle blood abnormalities, bone deformities, and organ damage. Congenital syphilis can cause blindness and excruciating pain.

Public health departments across the Central Valley, a largely rural expanse, report similar experiences. Following the release of the CDC report Tuesday, the California Department of Public Health released its county-by-county numbers for 2018. The report showed syphilis, gonorrhea, and chlamydia levels at their highest in 30 years, and attributed 22 stillbirths or neonatal deaths to congenital syphilis.

For the past several years, Fresno County, which had 63 cases of congenital syphilis in 2017, had the highest rate in California. In 2018, Fresno fell to fourth, behind Yuba, Kern, and San Joaquin counties. But the epidemic is far from under control. “I couldn’t even tell you how soon I think we’re going to see a decrease,” said Jena Adams, who oversees HIV and STD programs for Fresno County.

Syphilis was once a prolific and widely feared STD. But by the 1940s, penicillin was found to have a near-perfect cure rate for the disease. By 2000, syphilis rates were so low in the U.S. that the federal government launched a plan to eliminate the disease. Today, that goal is a distant memory.

Health departments once tracked down every person who tested positive for chlamydia, gonorrhea, or syphilis, to make sure they and their partners got treatment. With limited funds and climbing caseloads, many states now devote resources only to tracking syphilis. The caseloads are so high in some California counties that they track only women of childbearing age or just pregnant women.

“A lot of the funding for day-to-day public health work isn’t there,” said Jeffrey Klausner, MD, a professor at the University of California-Los Angeles who ran San Francisco’s STD program for more than a decade.

The bulk of STD prevention funding is appropriated by Congress to the CDC, which passes it on to states. That funding has been largely flat since 2003, according to data from the National Coalition of STD Directors, which represents health departments across the country. Take into account inflation and the growing caseloads, and the money is spread thinner. “It takes money, it takes training, it takes resources,” Dr. Klausner said, “and policymakers have just not prioritized that.”

A report this year by Trust for America’s Health, a public health policy research and advocacy group, estimated that 55,000 jobs were cut from local public health departments from 2008 to 2017. “We have our hands tied as much as [states] do,” said Dr. Bowen of the CDC. “We take what we’re given and try to distribute it as fairly as we can.”

San Joaquin County health officials have reorganized the department and applied for grants to increase the number of investigators available while congenital syphilis has spiked, said Hemal Parikh, county coordinator for STD control. But even with new hires and cutting back to tracking only women of childbearing age with syphilis, an investigator can have anywhere from 20 to 30 open cases at a time. In other counties, the caseload can be double that.

In 2018, Jennifer Wagman, PhD, a UCLA professor who studies infectious diseases and gender inequality, was part of a group that received CDC funding to look into what is causing the spike in congenital syphilis in California’s Central Valley.

Dr. Wagman said that, after years of studying health systems in other countries, she was shocked to see how much basic public health infrastructure has crumbled in California. In many parts of the Central Valley, county walk-in clinics that tested for and treated STDs were shuttered in the wake of the recession. That left few places for drop-in care, and investigators with no place to take someone for immediate treatment. Investigators or their patients must make appointments at one of the few providers who carry the right kind of treatment and hope the patients can keep the appointment when the time comes.

In focus groups, women told Dr. Wagman that working hourly jobs, or dealing with chaotic lives involving homelessness, abusive partners, and drug use, can make it all but impossible to stick to the appointments required at private clinics.

Dr. Wagman found that women in these high-risk groups were seeking care, though sometimes late in their pregnancy. They were just more likely to visit an emergency room, urgent care, or even a methadone clinic – places that take drop-ins but don’t necessarily routinely test for or treat syphilis.

“These people already have a million barriers,” said Jenny Malone, the public health nurse for San Joaquin County. “Now there are more.”

The most challenging cases in California are wrapped up with the state’s growing housing crisis and a methamphetamine epidemic with few treatment options. Women who are homeless often have unreliable contact information and are unlikely to have a primary care doctor. That makes them tough to track down to give a positive diagnosis or to follow up on a treatment plan.

Louisiana had the highest rate of congenital syphilis in the country for several years – until 2018. After a 22% drop in its rate, combined with increases in other states, Louisiana now ranks behind Texas and Nevada. That drop is the direct result of $550 million in temporary supplemental funding that the CDC gave the state to combat the epidemic, said Chaquetta Johnson, DNP, deputy director of operations for the state’s STD/HIV/hepatitis program. The money helped bolster the state’s lagging public health infrastructure. It was used to host two conferences for providers in the hardest-hit areas, hire two case managers and a nurse educator, create a program for in-home treatment, and improve data systems to track cases, among other things.

In California, more than 40% of pregnant women with syphilis passed it on to their baby in 2016, the most recent year for which data is available. Gov. Gavin Newsom (D) made additional funding available this year, but it’s a “drop in the bucket,” said Sergio Morales of Essential Access Health, a nonprofit that focuses on sexual and reproductive health and is working with Kern County on congenital syphilis. “We are seeing the results of years of inaction and a lack of prioritization of STD prevention, and we’re now paying the price.”
 

This KHN story first published on California Healthline, a service of the California Health Care Foundation. Kaiser Health News is a nonprofit national health policy news service. It is an editorially independent program of the Henry J. Kaiser Family Foundation that is not affiliated with Kaiser Permanente.

[Update: This story was revised at 6:50 p.m. ET on Oct. 8 to reflect news developments.]
 

One of the nation’s most preventable diseases is killing newborns in ever-increasing numbers.

Christoph Burgstedt/iStock/Getty Images Plus

Nationwide, 1,306 infants acquired syphilis from their mother in 2018, a 40% rise over 2017, according to federal data released Oct. 8. Seventy-eight of those babies were stillborn, and 16 died after birth.

In California, cases of congenital syphilis – the term used when a mother passes the infection to her baby during pregnancy – continued a stark 7-year climb, to 332 cases, an 18.1% increase from 2017, according to the federal data. Only Texas, Nevada, Louisiana, and Arizona had congenital syphilis rates higher than California’s. Those five states combined made up nearly two-thirds of total cases, although all but 17 states saw increases in their congenital syphilis rates.

The state-by-state numbers were released as part of a broader report from the Centers for Disease Control and Prevention tracking trends in sexually transmitted diseases. Cases of syphilis, gonorrhea, and chlamydia combined reached an all-time high in 2018. Cases of the most infectious stage of syphilis rose 14% to more than 35,000 cases; gonorrhea increased 5% to more than 580,000 cases; and chlamydia increased 3% to more than 1.7 million cases.

For veteran public health workers, the upward trend in congenital syphilis numbers is particularly disturbing because the condition is so easy to prevent. Blood tests can identify infection in pregnant women. The treatment is relatively simple and effective. When caught during pregnancy, transmission from mother to baby generally can be stopped.

“When we see a case of congenital syphilis, it is a hallmark of a health system and a health care failure,” said Virginia Bowen, PhD, an epidemiologist with the CDC and an author of the report.

It takes just a few shots of antibiotics to prevent a baby from getting syphilis from its mother. Left untreated, Treponema pallidum, the corkscrew-shaped organism that causes syphilis, can wiggle its way through a mother’s placenta and into a fetus. Once there, it can multiply furiously, invading every part of the body.

The effects on a newborn can be devastating. Philip Cheng, MD, is a neonatologist at St. Joseph’s Medical Center in Stockton, a city in San Joaquin County in California’s Central Valley. Twenty-six babies were infected last year in San Joaquin County, according to state data.

The brain of one of Cheng’s patients didn’t develop properly and the baby died shortly after birth. Other young patients survive but battle blood abnormalities, bone deformities, and organ damage. Congenital syphilis can cause blindness and excruciating pain.

Public health departments across the Central Valley, a largely rural expanse, report similar experiences. Following the release of the CDC report Tuesday, the California Department of Public Health released its county-by-county numbers for 2018. The report showed syphilis, gonorrhea, and chlamydia levels at their highest in 30 years, and attributed 22 stillbirths or neonatal deaths to congenital syphilis.

For the past several years, Fresno County, which had 63 cases of congenital syphilis in 2017, had the highest rate in California. In 2018, Fresno fell to fourth, behind Yuba, Kern, and San Joaquin counties. But the epidemic is far from under control. “I couldn’t even tell you how soon I think we’re going to see a decrease,” said Jena Adams, who oversees HIV and STD programs for Fresno County.

Syphilis was once a prolific and widely feared STD. But by the 1940s, penicillin was found to have a near-perfect cure rate for the disease. By 2000, syphilis rates were so low in the U.S. that the federal government launched a plan to eliminate the disease. Today, that goal is a distant memory.

Health departments once tracked down every person who tested positive for chlamydia, gonorrhea, or syphilis, to make sure they and their partners got treatment. With limited funds and climbing caseloads, many states now devote resources only to tracking syphilis. The caseloads are so high in some California counties that they track only women of childbearing age or just pregnant women.

“A lot of the funding for day-to-day public health work isn’t there,” said Jeffrey Klausner, MD, a professor at the University of California-Los Angeles who ran San Francisco’s STD program for more than a decade.

The bulk of STD prevention funding is appropriated by Congress to the CDC, which passes it on to states. That funding has been largely flat since 2003, according to data from the National Coalition of STD Directors, which represents health departments across the country. Take into account inflation and the growing caseloads, and the money is spread thinner. “It takes money, it takes training, it takes resources,” Dr. Klausner said, “and policymakers have just not prioritized that.”

A report this year by Trust for America’s Health, a public health policy research and advocacy group, estimated that 55,000 jobs were cut from local public health departments from 2008 to 2017. “We have our hands tied as much as [states] do,” said Dr. Bowen of the CDC. “We take what we’re given and try to distribute it as fairly as we can.”

San Joaquin County health officials have reorganized the department and applied for grants to increase the number of investigators available while congenital syphilis has spiked, said Hemal Parikh, county coordinator for STD control. But even with new hires and cutting back to tracking only women of childbearing age with syphilis, an investigator can have anywhere from 20 to 30 open cases at a time. In other counties, the caseload can be double that.

In 2018, Jennifer Wagman, PhD, a UCLA professor who studies infectious diseases and gender inequality, was part of a group that received CDC funding to look into what is causing the spike in congenital syphilis in California’s Central Valley.

Dr. Wagman said that, after years of studying health systems in other countries, she was shocked to see how much basic public health infrastructure has crumbled in California. In many parts of the Central Valley, county walk-in clinics that tested for and treated STDs were shuttered in the wake of the recession. That left few places for drop-in care, and investigators with no place to take someone for immediate treatment. Investigators or their patients must make appointments at one of the few providers who carry the right kind of treatment and hope the patients can keep the appointment when the time comes.

In focus groups, women told Dr. Wagman that working hourly jobs, or dealing with chaotic lives involving homelessness, abusive partners, and drug use, can make it all but impossible to stick to the appointments required at private clinics.

Dr. Wagman found that women in these high-risk groups were seeking care, though sometimes late in their pregnancy. They were just more likely to visit an emergency room, urgent care, or even a methadone clinic – places that take drop-ins but don’t necessarily routinely test for or treat syphilis.

“These people already have a million barriers,” said Jenny Malone, the public health nurse for San Joaquin County. “Now there are more.”

The most challenging cases in California are wrapped up with the state’s growing housing crisis and a methamphetamine epidemic with few treatment options. Women who are homeless often have unreliable contact information and are unlikely to have a primary care doctor. That makes them tough to track down to give a positive diagnosis or to follow up on a treatment plan.

Louisiana had the highest rate of congenital syphilis in the country for several years – until 2018. After a 22% drop in its rate, combined with increases in other states, Louisiana now ranks behind Texas and Nevada. That drop is the direct result of $550 million in temporary supplemental funding that the CDC gave the state to combat the epidemic, said Chaquetta Johnson, DNP, deputy director of operations for the state’s STD/HIV/hepatitis program. The money helped bolster the state’s lagging public health infrastructure. It was used to host two conferences for providers in the hardest-hit areas, hire two case managers and a nurse educator, create a program for in-home treatment, and improve data systems to track cases, among other things.

In California, more than 40% of pregnant women with syphilis passed it on to their baby in 2016, the most recent year for which data is available. Gov. Gavin Newsom (D) made additional funding available this year, but it’s a “drop in the bucket,” said Sergio Morales of Essential Access Health, a nonprofit that focuses on sexual and reproductive health and is working with Kern County on congenital syphilis. “We are seeing the results of years of inaction and a lack of prioritization of STD prevention, and we’re now paying the price.”
 

This KHN story first published on California Healthline, a service of the California Health Care Foundation. Kaiser Health News is a nonprofit national health policy news service. It is an editorially independent program of the Henry J. Kaiser Family Foundation that is not affiliated with Kaiser Permanente.

[Update: This story was revised at 6:50 p.m. ET on Oct. 8 to reflect news developments.]
 

One of the nation’s most preventable diseases is killing newborns in ever-increasing numbers.

Christoph Burgstedt/iStock/Getty Images Plus

Nationwide, 1,306 infants acquired syphilis from their mother in 2018, a 40% rise over 2017, according to federal data released Oct. 8. Seventy-eight of those babies were stillborn, and 16 died after birth.

In California, cases of congenital syphilis – the term used when a mother passes the infection to her baby during pregnancy – continued a stark 7-year climb, to 332 cases, an 18.1% increase from 2017, according to the federal data. Only Texas, Nevada, Louisiana, and Arizona had congenital syphilis rates higher than California’s. Those five states combined made up nearly two-thirds of total cases, although all but 17 states saw increases in their congenital syphilis rates.

The state-by-state numbers were released as part of a broader report from the Centers for Disease Control and Prevention tracking trends in sexually transmitted diseases. Cases of syphilis, gonorrhea, and chlamydia combined reached an all-time high in 2018. Cases of the most infectious stage of syphilis rose 14% to more than 35,000 cases; gonorrhea increased 5% to more than 580,000 cases; and chlamydia increased 3% to more than 1.7 million cases.

For veteran public health workers, the upward trend in congenital syphilis numbers is particularly disturbing because the condition is so easy to prevent. Blood tests can identify infection in pregnant women. The treatment is relatively simple and effective. When caught during pregnancy, transmission from mother to baby generally can be stopped.

“When we see a case of congenital syphilis, it is a hallmark of a health system and a health care failure,” said Virginia Bowen, PhD, an epidemiologist with the CDC and an author of the report.

It takes just a few shots of antibiotics to prevent a baby from getting syphilis from its mother. Left untreated, Treponema pallidum, the corkscrew-shaped organism that causes syphilis, can wiggle its way through a mother’s placenta and into a fetus. Once there, it can multiply furiously, invading every part of the body.

The effects on a newborn can be devastating. Philip Cheng, MD, is a neonatologist at St. Joseph’s Medical Center in Stockton, a city in San Joaquin County in California’s Central Valley. Twenty-six babies were infected last year in San Joaquin County, according to state data.

The brain of one of Cheng’s patients didn’t develop properly and the baby died shortly after birth. Other young patients survive but battle blood abnormalities, bone deformities, and organ damage. Congenital syphilis can cause blindness and excruciating pain.

Public health departments across the Central Valley, a largely rural expanse, report similar experiences. Following the release of the CDC report Tuesday, the California Department of Public Health released its county-by-county numbers for 2018. The report showed syphilis, gonorrhea, and chlamydia levels at their highest in 30 years, and attributed 22 stillbirths or neonatal deaths to congenital syphilis.

For the past several years, Fresno County, which had 63 cases of congenital syphilis in 2017, had the highest rate in California. In 2018, Fresno fell to fourth, behind Yuba, Kern, and San Joaquin counties. But the epidemic is far from under control. “I couldn’t even tell you how soon I think we’re going to see a decrease,” said Jena Adams, who oversees HIV and STD programs for Fresno County.

Syphilis was once a prolific and widely feared STD. But by the 1940s, penicillin was found to have a near-perfect cure rate for the disease. By 2000, syphilis rates were so low in the U.S. that the federal government launched a plan to eliminate the disease. Today, that goal is a distant memory.

Health departments once tracked down every person who tested positive for chlamydia, gonorrhea, or syphilis, to make sure they and their partners got treatment. With limited funds and climbing caseloads, many states now devote resources only to tracking syphilis. The caseloads are so high in some California counties that they track only women of childbearing age or just pregnant women.

“A lot of the funding for day-to-day public health work isn’t there,” said Jeffrey Klausner, MD, a professor at the University of California-Los Angeles who ran San Francisco’s STD program for more than a decade.

The bulk of STD prevention funding is appropriated by Congress to the CDC, which passes it on to states. That funding has been largely flat since 2003, according to data from the National Coalition of STD Directors, which represents health departments across the country. Take into account inflation and the growing caseloads, and the money is spread thinner. “It takes money, it takes training, it takes resources,” Dr. Klausner said, “and policymakers have just not prioritized that.”

A report this year by Trust for America’s Health, a public health policy research and advocacy group, estimated that 55,000 jobs were cut from local public health departments from 2008 to 2017. “We have our hands tied as much as [states] do,” said Dr. Bowen of the CDC. “We take what we’re given and try to distribute it as fairly as we can.”

San Joaquin County health officials have reorganized the department and applied for grants to increase the number of investigators available while congenital syphilis has spiked, said Hemal Parikh, county coordinator for STD control. But even with new hires and cutting back to tracking only women of childbearing age with syphilis, an investigator can have anywhere from 20 to 30 open cases at a time. In other counties, the caseload can be double that.

In 2018, Jennifer Wagman, PhD, a UCLA professor who studies infectious diseases and gender inequality, was part of a group that received CDC funding to look into what is causing the spike in congenital syphilis in California’s Central Valley.

Dr. Wagman said that, after years of studying health systems in other countries, she was shocked to see how much basic public health infrastructure has crumbled in California. In many parts of the Central Valley, county walk-in clinics that tested for and treated STDs were shuttered in the wake of the recession. That left few places for drop-in care, and investigators with no place to take someone for immediate treatment. Investigators or their patients must make appointments at one of the few providers who carry the right kind of treatment and hope the patients can keep the appointment when the time comes.

In focus groups, women told Dr. Wagman that working hourly jobs, or dealing with chaotic lives involving homelessness, abusive partners, and drug use, can make it all but impossible to stick to the appointments required at private clinics.

Dr. Wagman found that women in these high-risk groups were seeking care, though sometimes late in their pregnancy. They were just more likely to visit an emergency room, urgent care, or even a methadone clinic – places that take drop-ins but don’t necessarily routinely test for or treat syphilis.

“These people already have a million barriers,” said Jenny Malone, the public health nurse for San Joaquin County. “Now there are more.”

The most challenging cases in California are wrapped up with the state’s growing housing crisis and a methamphetamine epidemic with few treatment options. Women who are homeless often have unreliable contact information and are unlikely to have a primary care doctor. That makes them tough to track down to give a positive diagnosis or to follow up on a treatment plan.

Louisiana had the highest rate of congenital syphilis in the country for several years – until 2018. After a 22% drop in its rate, combined with increases in other states, Louisiana now ranks behind Texas and Nevada. That drop is the direct result of $550 million in temporary supplemental funding that the CDC gave the state to combat the epidemic, said Chaquetta Johnson, DNP, deputy director of operations for the state’s STD/HIV/hepatitis program. The money helped bolster the state’s lagging public health infrastructure. It was used to host two conferences for providers in the hardest-hit areas, hire two case managers and a nurse educator, create a program for in-home treatment, and improve data systems to track cases, among other things.

In California, more than 40% of pregnant women with syphilis passed it on to their baby in 2016, the most recent year for which data is available. Gov. Gavin Newsom (D) made additional funding available this year, but it’s a “drop in the bucket,” said Sergio Morales of Essential Access Health, a nonprofit that focuses on sexual and reproductive health and is working with Kern County on congenital syphilis. “We are seeing the results of years of inaction and a lack of prioritization of STD prevention, and we’re now paying the price.”
 

This KHN story first published on California Healthline, a service of the California Health Care Foundation. Kaiser Health News is a nonprofit national health policy news service. It is an editorially independent program of the Henry J. Kaiser Family Foundation that is not affiliated with Kaiser Permanente.

[Update: This story was revised at 6:50 p.m. ET on Oct. 8 to reflect news developments.]
 

Up-to-date vaccination rates rose significantly in a neonatal ICU after implementation of five interventions targeting root causes of low immunization, according to a study in Pediatrics.

MarianVejcik/Getty Images

Investigators led by Raymond C. Stetson, MD, of the Mayo Clinic in Rochester, Minn., identified three root causes of underimmunization in a NICU at Mayo Clinic: providers’ lack of knowledge about recommended immunization schedules; immunizations not being ordered when they were due; and parental hesitancy toward vaccination. They addressed these causes with the following five phases of intervention: an intranet resource educating providers about vaccine schedules and dosing intervals; a spreadsheet-based checklist to track and flag immunization status; an intranet resource aimed at discussion with vaccine-hesitant parents; education about safety in providing immunization and review of material from the first three interventions; and education about documentation, including parental consent.

Over the project period, 1,242 infants were discharged or transferred from the NICU. The study included a 6-month “improve phase,” during which interventions were implemented, and a “control phase,” during which the ongoing effects after implementation were observed. At baseline, the rate of fully immunized infants in the NICU was only 56% by time of discharge or transfer, but during the combined improve and control phases, it was 93% with a P value of less than .001.

One of the limitations of the study is that the first three interventions were introduced simultaneously, which makes it hard to determine how much effect each might have had.

“Infants treated in NICUs represent a vulnerable population with the potential for high morbidity and mortality from vaccine-preventable infections,” the investigators wrote. “Our [quality improvement] effort, and others, demonstrate that this population is at risk for underimmunization and that immunization rates can be improved with a small number of interventions. Additionally, we were able to significantly decrease the number of days that immunizations were delayed compared to the routine infant vaccination schedule.”

There was no external funding for the study. One of the coauthors is on safety committees of vaccine studies for Merck. The other authors have no relevant financial disclosures.

cpalmer@mdedge.com

SOURCE: Stetson R et al. Pediatr. 2019. doi: 10.1542/peds.2019-0337.

Up-to-date vaccination rates rose significantly in a neonatal ICU after implementation of five interventions targeting root causes of low immunization, according to a study in Pediatrics.

MarianVejcik/Getty Images

Investigators led by Raymond C. Stetson, MD, of the Mayo Clinic in Rochester, Minn., identified three root causes of underimmunization in a NICU at Mayo Clinic: providers’ lack of knowledge about recommended immunization schedules; immunizations not being ordered when they were due; and parental hesitancy toward vaccination. They addressed these causes with the following five phases of intervention: an intranet resource educating providers about vaccine schedules and dosing intervals; a spreadsheet-based checklist to track and flag immunization status; an intranet resource aimed at discussion with vaccine-hesitant parents; education about safety in providing immunization and review of material from the first three interventions; and education about documentation, including parental consent.

Over the project period, 1,242 infants were discharged or transferred from the NICU. The study included a 6-month “improve phase,” during which interventions were implemented, and a “control phase,” during which the ongoing effects after implementation were observed. At baseline, the rate of fully immunized infants in the NICU was only 56% by time of discharge or transfer, but during the combined improve and control phases, it was 93% with a P value of less than .001.

One of the limitations of the study is that the first three interventions were introduced simultaneously, which makes it hard to determine how much effect each might have had.

“Infants treated in NICUs represent a vulnerable population with the potential for high morbidity and mortality from vaccine-preventable infections,” the investigators wrote. “Our [quality improvement] effort, and others, demonstrate that this population is at risk for underimmunization and that immunization rates can be improved with a small number of interventions. Additionally, we were able to significantly decrease the number of days that immunizations were delayed compared to the routine infant vaccination schedule.”

There was no external funding for the study. One of the coauthors is on safety committees of vaccine studies for Merck. The other authors have no relevant financial disclosures.

cpalmer@mdedge.com

SOURCE: Stetson R et al. Pediatr. 2019. doi: 10.1542/peds.2019-0337.

Up-to-date vaccination rates rose significantly in a neonatal ICU after implementation of five interventions targeting root causes of low immunization, according to a study in Pediatrics.

MarianVejcik/Getty Images

Investigators led by Raymond C. Stetson, MD, of the Mayo Clinic in Rochester, Minn., identified three root causes of underimmunization in a NICU at Mayo Clinic: providers’ lack of knowledge about recommended immunization schedules; immunizations not being ordered when they were due; and parental hesitancy toward vaccination. They addressed these causes with the following five phases of intervention: an intranet resource educating providers about vaccine schedules and dosing intervals; a spreadsheet-based checklist to track and flag immunization status; an intranet resource aimed at discussion with vaccine-hesitant parents; education about safety in providing immunization and review of material from the first three interventions; and education about documentation, including parental consent.

Over the project period, 1,242 infants were discharged or transferred from the NICU. The study included a 6-month “improve phase,” during which interventions were implemented, and a “control phase,” during which the ongoing effects after implementation were observed. At baseline, the rate of fully immunized infants in the NICU was only 56% by time of discharge or transfer, but during the combined improve and control phases, it was 93% with a P value of less than .001.

One of the limitations of the study is that the first three interventions were introduced simultaneously, which makes it hard to determine how much effect each might have had.

“Infants treated in NICUs represent a vulnerable population with the potential for high morbidity and mortality from vaccine-preventable infections,” the investigators wrote. “Our [quality improvement] effort, and others, demonstrate that this population is at risk for underimmunization and that immunization rates can be improved with a small number of interventions. Additionally, we were able to significantly decrease the number of days that immunizations were delayed compared to the routine infant vaccination schedule.”

There was no external funding for the study. One of the coauthors is on safety committees of vaccine studies for Merck. The other authors have no relevant financial disclosures.

cpalmer@mdedge.com

SOURCE: Stetson R et al. Pediatr. 2019. doi: 10.1542/peds.2019-0337.

The recent drop in U.S. twin birthrates after more than three decades of increases was not distributed evenly among demographic groups, according to the National Center for Health Statistics.

The twin birthrate, which had increased by 79% during 1980-2014, fell by 4% during 2014-2018, but that decline was “not universal across maternal age and race and Hispanic-origin groups,” the NCHS investigators said.

Twin birthrates fell by at least 10% for mothers aged 30 years and older from 2014 to 2018 but held steady for women in their twenties. Over that same period, the twin birthrate fell by a significant 7% among non-Hispanic white women (36.7 to 34.3 per 1,000 total births) but increased just slightly for non-Hispanic black women (40.0 to 40.5 per 1,000) and Hispanic women (24.1 to 24.4), the investigators reported.

For women 30 years and older, the drops in twin births got larger as age increased and were significant for each age group. The rate for women aged 30-34 years fell 10% as it went from 40.3 per 1,000 total births in 2014 to 36.2 per 1,000. The decrease was 12% (from 48.6 per 1,000 to 42.8) for women aged 35-39 and 23% (from 66.0 to 51.1) for those aged 40 years and older, they said based on data from the National Vital Statistics System.

The rates were basically unchanged for women in their 20s, from 23.0 to 23.2 in 20- to 24-year-olds and 30.5 to 30.4 in 25- to 29-year-olds – but there was a significant increase for the youngest group with rates among those younger than 20 years going from 16.0 to 17.1 per 1,000, the report showed.

rfranki@mdedge.com

The recent drop in U.S. twin birthrates after more than three decades of increases was not distributed evenly among demographic groups, according to the National Center for Health Statistics.

The twin birthrate, which had increased by 79% during 1980-2014, fell by 4% during 2014-2018, but that decline was “not universal across maternal age and race and Hispanic-origin groups,” the NCHS investigators said.

Twin birthrates fell by at least 10% for mothers aged 30 years and older from 2014 to 2018 but held steady for women in their twenties. Over that same period, the twin birthrate fell by a significant 7% among non-Hispanic white women (36.7 to 34.3 per 1,000 total births) but increased just slightly for non-Hispanic black women (40.0 to 40.5 per 1,000) and Hispanic women (24.1 to 24.4), the investigators reported.

For women 30 years and older, the drops in twin births got larger as age increased and were significant for each age group. The rate for women aged 30-34 years fell 10% as it went from 40.3 per 1,000 total births in 2014 to 36.2 per 1,000. The decrease was 12% (from 48.6 per 1,000 to 42.8) for women aged 35-39 and 23% (from 66.0 to 51.1) for those aged 40 years and older, they said based on data from the National Vital Statistics System.

The rates were basically unchanged for women in their 20s, from 23.0 to 23.2 in 20- to 24-year-olds and 30.5 to 30.4 in 25- to 29-year-olds – but there was a significant increase for the youngest group with rates among those younger than 20 years going from 16.0 to 17.1 per 1,000, the report showed.

rfranki@mdedge.com

The recent drop in U.S. twin birthrates after more than three decades of increases was not distributed evenly among demographic groups, according to the National Center for Health Statistics.

The twin birthrate, which had increased by 79% during 1980-2014, fell by 4% during 2014-2018, but that decline was “not universal across maternal age and race and Hispanic-origin groups,” the NCHS investigators said.

Twin birthrates fell by at least 10% for mothers aged 30 years and older from 2014 to 2018 but held steady for women in their twenties. Over that same period, the twin birthrate fell by a significant 7% among non-Hispanic white women (36.7 to 34.3 per 1,000 total births) but increased just slightly for non-Hispanic black women (40.0 to 40.5 per 1,000) and Hispanic women (24.1 to 24.4), the investigators reported.

For women 30 years and older, the drops in twin births got larger as age increased and were significant for each age group. The rate for women aged 30-34 years fell 10% as it went from 40.3 per 1,000 total births in 2014 to 36.2 per 1,000. The decrease was 12% (from 48.6 per 1,000 to 42.8) for women aged 35-39 and 23% (from 66.0 to 51.1) for those aged 40 years and older, they said based on data from the National Vital Statistics System.

The rates were basically unchanged for women in their 20s, from 23.0 to 23.2 in 20- to 24-year-olds and 30.5 to 30.4 in 25- to 29-year-olds – but there was a significant increase for the youngest group with rates among those younger than 20 years going from 16.0 to 17.1 per 1,000, the report showed.

rfranki@mdedge.com

Almost half of the newborns admitted to U.S. neonatal intensive care units in 2017 were of normal birth weight, according to a new report from the Dartmouth Institute for Health Policy & Clinical Practice.

The proportion of NICU admissions involving normal-weight (2,500-3,999 g) newborns increased from 42% in 2007 to 48% in 2017, investigators said in the Dartmouth Atlas of Neonatal Intensive Care. Over that same period, admissions of very-low-birth-weight (500-1,499 g) babies dropped from 16% to 13% of the total.

Those changes were part of a larger, longer-term trend. “The expansion of NICUs and beds in recent decades has been associated with changes in the newborn population receiving NICU care,” the investigators said in the report.

The number of NICU beds increased by 65% from 1995 to 2013, and the number of neonatologists rose by 75% from 1996 to 2013. “At the same time, the number of newborns has remained relatively stable. This has led to increasing numbers of lower-risk newborns being admitted to NICUs,” they said in a written statement.

The increases in NICU and neonatologist supply, however, did not always follow the need for such care. Areas of the country with high rates of newborn prematurity, or of risk factors such as low maternal education levels or high cesarean section rates, do not have higher supplies of NICU beds or neonatologists, the researchers noted.

“We should not spare a dollar in providing the best care for newborns. But spending more doesn’t help infants if they could receive the care they need in a maternity unit or home with their mothers. It is very troubling that such a valuable and expensive health care resource is not distributed where it is needed,” said principal author David C. Goodman, MD, of the Dartmouth Institute for Health Policy & Clinical Practice in Lebanon, N.H.

rfranki@mdedge.com

Almost half of the newborns admitted to U.S. neonatal intensive care units in 2017 were of normal birth weight, according to a new report from the Dartmouth Institute for Health Policy & Clinical Practice.

The proportion of NICU admissions involving normal-weight (2,500-3,999 g) newborns increased from 42% in 2007 to 48% in 2017, investigators said in the Dartmouth Atlas of Neonatal Intensive Care. Over that same period, admissions of very-low-birth-weight (500-1,499 g) babies dropped from 16% to 13% of the total.

Those changes were part of a larger, longer-term trend. “The expansion of NICUs and beds in recent decades has been associated with changes in the newborn population receiving NICU care,” the investigators said in the report.

The number of NICU beds increased by 65% from 1995 to 2013, and the number of neonatologists rose by 75% from 1996 to 2013. “At the same time, the number of newborns has remained relatively stable. This has led to increasing numbers of lower-risk newborns being admitted to NICUs,” they said in a written statement.

The increases in NICU and neonatologist supply, however, did not always follow the need for such care. Areas of the country with high rates of newborn prematurity, or of risk factors such as low maternal education levels or high cesarean section rates, do not have higher supplies of NICU beds or neonatologists, the researchers noted.

“We should not spare a dollar in providing the best care for newborns. But spending more doesn’t help infants if they could receive the care they need in a maternity unit or home with their mothers. It is very troubling that such a valuable and expensive health care resource is not distributed where it is needed,” said principal author David C. Goodman, MD, of the Dartmouth Institute for Health Policy & Clinical Practice in Lebanon, N.H.

rfranki@mdedge.com

Almost half of the newborns admitted to U.S. neonatal intensive care units in 2017 were of normal birth weight, according to a new report from the Dartmouth Institute for Health Policy & Clinical Practice.

The proportion of NICU admissions involving normal-weight (2,500-3,999 g) newborns increased from 42% in 2007 to 48% in 2017, investigators said in the Dartmouth Atlas of Neonatal Intensive Care. Over that same period, admissions of very-low-birth-weight (500-1,499 g) babies dropped from 16% to 13% of the total.

Those changes were part of a larger, longer-term trend. “The expansion of NICUs and beds in recent decades has been associated with changes in the newborn population receiving NICU care,” the investigators said in the report.

The number of NICU beds increased by 65% from 1995 to 2013, and the number of neonatologists rose by 75% from 1996 to 2013. “At the same time, the number of newborns has remained relatively stable. This has led to increasing numbers of lower-risk newborns being admitted to NICUs,” they said in a written statement.

The increases in NICU and neonatologist supply, however, did not always follow the need for such care. Areas of the country with high rates of newborn prematurity, or of risk factors such as low maternal education levels or high cesarean section rates, do not have higher supplies of NICU beds or neonatologists, the researchers noted.

“We should not spare a dollar in providing the best care for newborns. But spending more doesn’t help infants if they could receive the care they need in a maternity unit or home with their mothers. It is very troubling that such a valuable and expensive health care resource is not distributed where it is needed,” said principal author David C. Goodman, MD, of the Dartmouth Institute for Health Policy & Clinical Practice in Lebanon, N.H.

rfranki@mdedge.com

SEATTLE – Procalcitonin, a marker of bacterial infection, rises and peaks sooner than C-reactive protein (CRP), and is especially useful to help rule out invasive bacterial infections in young infants and pediatric community acquired pneumonia due to typical bacteria, according to a presentation at the 2019 Pediatric Hospital Medicine Conference.

M. Alexander Otto/MDedge News

It’s “excellent for identifying low risk patients” and has the potential to decrease lumbar punctures and antibiotic exposure, but “the specificity isn’t great,” so there’s the potential for false positives, said Russell McCulloh, MD, a pediatric infectious disease specialist at the University of Nebraska Medical Center, Omaha.

There was great interest in procalcitonin at the meeting; the presentation room was packed, with a line out the door. It’s used mostly in Europe at this point. Testing is available in many U.S. hospitals, but a large majority of audience members, when polled, said they don’t currently use it in clinical practice, and that it’s not a part of diagnostic algorithms at their institutions.

Levels of procalcitonin, a calcitonin precursor normally produced by the thyroid, are low or undetectable in healthy people, but inflammation, be it from infectious or noninfectious causes, triggers production by parenchymal cells throughout the body.

Levels began to rise as early as 2.5 hours after healthy subjects in one study were injected with bacterial endotoxins, and peaked as early as 6 hours; CRP, in contrast, started to rise after 12 hours, and peaked at 30 hours. Procalcitonin levels also seem to correlate with bacterial load and severity of infection, said Nivedita Srinivas, MD, a pediatric infectious disease specialist at Stanford (Calif.) University (J Pediatr Intensive Care. 2016 Dec;5[4]:162-71).

Due to time, the presenters focused their talk on community acquired pneumonia (CAP) and invasive bacterial infections (IBI) in young infants, meaning essentially bacteremia and meningitis.

Different studies use different cutoffs, but a procalcitonin below, for instance, 0.5 ng/mL is “certainly more sensitive [for IBI] than any single biomarker we currently use,” including CRP, white blood cells, and absolute neutrophil count (ANC). “If it’s negative, you’re really confident it’s negative,” but “a positive test does not necessarily indicate the presence of IBI,” Dr. McCulloh said (Pediatrics. 2012 Nov;130[5]:815-22).

“Procalcitonin works really well as part of a validated step-wise rule” that includes, for instance, CRP and ANC; “I think that’s where its utility is. On its own, it is not a substitute for you examining the patient and doing your basic risk stratification, but it may enhance your decision making incrementally above what we currently have,” he said.

Meanwhile, in a study of 532 children a median age of 2.4 years with radiographically confirmed CAP, procalcitonin levels were a median of 6.1 ng/mL in children whose pneumonia was caused by Streptococcus pneumoniae or other typical bacteria, and no child infected with typical bacteria had a level under 0.1 ng/mL. Below that level, “you can be very sure you do not have typical bacteria pneumonia,” said Marie Wang, MD, also a pediatric infectious disease specialist at Stanford (J Pediatric Infect Dis Soc. 2018 Feb 19;7[1]:46-53).

As procalcitonin levels went up, the likelihood of having bacterial pneumonia increased; at 2 ng/mL, 26% of subjects were infected with typical bacteria, “but even in that group, 58% still had viral infection, so you are still detecting a lot of viral” disease, she said.

Prolcalcitonin-guided therapy – antibiotics until patients fall below a level of 0.25 ng/ml, for instance – has also been associated with decreased antibiotic exposure (Respir Med. 2011 Dec;105[12]:1939-45).

The speakers had no disclosures. The meeting was sponsored by the Society of Hospital Medicine, the American Academy of Pediatrics, and the Academic Pediatric Association.

aotto@mdedge.com

SEATTLE – Procalcitonin, a marker of bacterial infection, rises and peaks sooner than C-reactive protein (CRP), and is especially useful to help rule out invasive bacterial infections in young infants and pediatric community acquired pneumonia due to typical bacteria, according to a presentation at the 2019 Pediatric Hospital Medicine Conference.

M. Alexander Otto/MDedge News

It’s “excellent for identifying low risk patients” and has the potential to decrease lumbar punctures and antibiotic exposure, but “the specificity isn’t great,” so there’s the potential for false positives, said Russell McCulloh, MD, a pediatric infectious disease specialist at the University of Nebraska Medical Center, Omaha.

There was great interest in procalcitonin at the meeting; the presentation room was packed, with a line out the door. It’s used mostly in Europe at this point. Testing is available in many U.S. hospitals, but a large majority of audience members, when polled, said they don’t currently use it in clinical practice, and that it’s not a part of diagnostic algorithms at their institutions.

Levels of procalcitonin, a calcitonin precursor normally produced by the thyroid, are low or undetectable in healthy people, but inflammation, be it from infectious or noninfectious causes, triggers production by parenchymal cells throughout the body.

Levels began to rise as early as 2.5 hours after healthy subjects in one study were injected with bacterial endotoxins, and peaked as early as 6 hours; CRP, in contrast, started to rise after 12 hours, and peaked at 30 hours. Procalcitonin levels also seem to correlate with bacterial load and severity of infection, said Nivedita Srinivas, MD, a pediatric infectious disease specialist at Stanford (Calif.) University (J Pediatr Intensive Care. 2016 Dec;5[4]:162-71).

Due to time, the presenters focused their talk on community acquired pneumonia (CAP) and invasive bacterial infections (IBI) in young infants, meaning essentially bacteremia and meningitis.

Different studies use different cutoffs, but a procalcitonin below, for instance, 0.5 ng/mL is “certainly more sensitive [for IBI] than any single biomarker we currently use,” including CRP, white blood cells, and absolute neutrophil count (ANC). “If it’s negative, you’re really confident it’s negative,” but “a positive test does not necessarily indicate the presence of IBI,” Dr. McCulloh said (Pediatrics. 2012 Nov;130[5]:815-22).

“Procalcitonin works really well as part of a validated step-wise rule” that includes, for instance, CRP and ANC; “I think that’s where its utility is. On its own, it is not a substitute for you examining the patient and doing your basic risk stratification, but it may enhance your decision making incrementally above what we currently have,” he said.

Meanwhile, in a study of 532 children a median age of 2.4 years with radiographically confirmed CAP, procalcitonin levels were a median of 6.1 ng/mL in children whose pneumonia was caused by Streptococcus pneumoniae or other typical bacteria, and no child infected with typical bacteria had a level under 0.1 ng/mL. Below that level, “you can be very sure you do not have typical bacteria pneumonia,” said Marie Wang, MD, also a pediatric infectious disease specialist at Stanford (J Pediatric Infect Dis Soc. 2018 Feb 19;7[1]:46-53).

As procalcitonin levels went up, the likelihood of having bacterial pneumonia increased; at 2 ng/mL, 26% of subjects were infected with typical bacteria, “but even in that group, 58% still had viral infection, so you are still detecting a lot of viral” disease, she said.

Prolcalcitonin-guided therapy – antibiotics until patients fall below a level of 0.25 ng/ml, for instance – has also been associated with decreased antibiotic exposure (Respir Med. 2011 Dec;105[12]:1939-45).

The speakers had no disclosures. The meeting was sponsored by the Society of Hospital Medicine, the American Academy of Pediatrics, and the Academic Pediatric Association.

aotto@mdedge.com

SEATTLE – Procalcitonin, a marker of bacterial infection, rises and peaks sooner than C-reactive protein (CRP), and is especially useful to help rule out invasive bacterial infections in young infants and pediatric community acquired pneumonia due to typical bacteria, according to a presentation at the 2019 Pediatric Hospital Medicine Conference.

M. Alexander Otto/MDedge News

It’s “excellent for identifying low risk patients” and has the potential to decrease lumbar punctures and antibiotic exposure, but “the specificity isn’t great,” so there’s the potential for false positives, said Russell McCulloh, MD, a pediatric infectious disease specialist at the University of Nebraska Medical Center, Omaha.

There was great interest in procalcitonin at the meeting; the presentation room was packed, with a line out the door. It’s used mostly in Europe at this point. Testing is available in many U.S. hospitals, but a large majority of audience members, when polled, said they don’t currently use it in clinical practice, and that it’s not a part of diagnostic algorithms at their institutions.

Levels of procalcitonin, a calcitonin precursor normally produced by the thyroid, are low or undetectable in healthy people, but inflammation, be it from infectious or noninfectious causes, triggers production by parenchymal cells throughout the body.

Levels began to rise as early as 2.5 hours after healthy subjects in one study were injected with bacterial endotoxins, and peaked as early as 6 hours; CRP, in contrast, started to rise after 12 hours, and peaked at 30 hours. Procalcitonin levels also seem to correlate with bacterial load and severity of infection, said Nivedita Srinivas, MD, a pediatric infectious disease specialist at Stanford (Calif.) University (J Pediatr Intensive Care. 2016 Dec;5[4]:162-71).

Due to time, the presenters focused their talk on community acquired pneumonia (CAP) and invasive bacterial infections (IBI) in young infants, meaning essentially bacteremia and meningitis.

Different studies use different cutoffs, but a procalcitonin below, for instance, 0.5 ng/mL is “certainly more sensitive [for IBI] than any single biomarker we currently use,” including CRP, white blood cells, and absolute neutrophil count (ANC). “If it’s negative, you’re really confident it’s negative,” but “a positive test does not necessarily indicate the presence of IBI,” Dr. McCulloh said (Pediatrics. 2012 Nov;130[5]:815-22).

“Procalcitonin works really well as part of a validated step-wise rule” that includes, for instance, CRP and ANC; “I think that’s where its utility is. On its own, it is not a substitute for you examining the patient and doing your basic risk stratification, but it may enhance your decision making incrementally above what we currently have,” he said.

Meanwhile, in a study of 532 children a median age of 2.4 years with radiographically confirmed CAP, procalcitonin levels were a median of 6.1 ng/mL in children whose pneumonia was caused by Streptococcus pneumoniae or other typical bacteria, and no child infected with typical bacteria had a level under 0.1 ng/mL. Below that level, “you can be very sure you do not have typical bacteria pneumonia,” said Marie Wang, MD, also a pediatric infectious disease specialist at Stanford (J Pediatric Infect Dis Soc. 2018 Feb 19;7[1]:46-53).

As procalcitonin levels went up, the likelihood of having bacterial pneumonia increased; at 2 ng/mL, 26% of subjects were infected with typical bacteria, “but even in that group, 58% still had viral infection, so you are still detecting a lot of viral” disease, she said.

Prolcalcitonin-guided therapy – antibiotics until patients fall below a level of 0.25 ng/ml, for instance – has also been associated with decreased antibiotic exposure (Respir Med. 2011 Dec;105[12]:1939-45).

The speakers had no disclosures. The meeting was sponsored by the Society of Hospital Medicine, the American Academy of Pediatrics, and the Academic Pediatric Association.

aotto@mdedge.com

SEATTLE – The more concentrated urine is in newborns, the more you can trust negative nitrite tests to rule out urinary tract infections, according to investigators at the University of Texas Health Science Center, Houston.

M. Alexander Otto/MDedge News

The researchers found that urine testing negative for nitrites with a specific gravity above 1.015 in children up to 2 months old had a sensitivity of 53% for ruling out UTIs, but that urine with a specific gravity below that mark had a sensitivity of just 14%. The finding “should be taken into account when interpreting nitrite results ... in this high-risk population,” they concluded.

Bacteria in the bladder convert nitrates to nitrites, so positive results are pretty much pathognomonic for UTIs, with a specificity of nearly 100%, according to the researchers.

Negative results, however, don’t reliably rule out infection, and are even less reliable in infants because they urinate frequently, which means they usually flush out bacteria before they have enough time to make the conversion, which takes several hours, they said.

The lead investigator Raymond Parlar-Chun, MD, an assistant professor of pediatrics at the University of Texas McGovern Medical School in Houston, said he had a hunch that negative results might be more reliable when newborns urinate less frequently and have more concentrated urine.

He and his team reviewed data collected on 413 infants up to 2 months old who were admitted for fever workup and treated for UTIs both in the hospital and after discharge. Nitrite results were stratified by urine concentration. A specific gravity of 1.015 was used as the cutoff between concentrated and dilute urine, which was “midway between the parameters reported” in every urinalysis, Dr. Parlar-Chun said.

Although the sensitivity of concentrated urine was only 53%, “it’s a stark difference from” the 14% in dilute urine, he said.“You should take a look at specific gravity to interpret nitrites. If urine is concentrated, you have [more confidence] that you don’t have a UTI if you’re negative. It’s better than taking [nitrites] at face value.”

The subjects were 31 days old, on average, and 62% were boys; 112 had a specific gravity above 1.015, and 301 below.

There was no external funding, and Dr. Parlar-Chun didn’t have any disclosures.

aotto@mdedge.com

SEATTLE – The more concentrated urine is in newborns, the more you can trust negative nitrite tests to rule out urinary tract infections, according to investigators at the University of Texas Health Science Center, Houston.

M. Alexander Otto/MDedge News

The researchers found that urine testing negative for nitrites with a specific gravity above 1.015 in children up to 2 months old had a sensitivity of 53% for ruling out UTIs, but that urine with a specific gravity below that mark had a sensitivity of just 14%. The finding “should be taken into account when interpreting nitrite results ... in this high-risk population,” they concluded.

Bacteria in the bladder convert nitrates to nitrites, so positive results are pretty much pathognomonic for UTIs, with a specificity of nearly 100%, according to the researchers.

Negative results, however, don’t reliably rule out infection, and are even less reliable in infants because they urinate frequently, which means they usually flush out bacteria before they have enough time to make the conversion, which takes several hours, they said.

The lead investigator Raymond Parlar-Chun, MD, an assistant professor of pediatrics at the University of Texas McGovern Medical School in Houston, said he had a hunch that negative results might be more reliable when newborns urinate less frequently and have more concentrated urine.

He and his team reviewed data collected on 413 infants up to 2 months old who were admitted for fever workup and treated for UTIs both in the hospital and after discharge. Nitrite results were stratified by urine concentration. A specific gravity of 1.015 was used as the cutoff between concentrated and dilute urine, which was “midway between the parameters reported” in every urinalysis, Dr. Parlar-Chun said.

Although the sensitivity of concentrated urine was only 53%, “it’s a stark difference from” the 14% in dilute urine, he said.“You should take a look at specific gravity to interpret nitrites. If urine is concentrated, you have [more confidence] that you don’t have a UTI if you’re negative. It’s better than taking [nitrites] at face value.”

The subjects were 31 days old, on average, and 62% were boys; 112 had a specific gravity above 1.015, and 301 below.

There was no external funding, and Dr. Parlar-Chun didn’t have any disclosures.

aotto@mdedge.com

SEATTLE – The more concentrated urine is in newborns, the more you can trust negative nitrite tests to rule out urinary tract infections, according to investigators at the University of Texas Health Science Center, Houston.

M. Alexander Otto/MDedge News

The researchers found that urine testing negative for nitrites with a specific gravity above 1.015 in children up to 2 months old had a sensitivity of 53% for ruling out UTIs, but that urine with a specific gravity below that mark had a sensitivity of just 14%. The finding “should be taken into account when interpreting nitrite results ... in this high-risk population,” they concluded.

Bacteria in the bladder convert nitrates to nitrites, so positive results are pretty much pathognomonic for UTIs, with a specificity of nearly 100%, according to the researchers.

Negative results, however, don’t reliably rule out infection, and are even less reliable in infants because they urinate frequently, which means they usually flush out bacteria before they have enough time to make the conversion, which takes several hours, they said.

The lead investigator Raymond Parlar-Chun, MD, an assistant professor of pediatrics at the University of Texas McGovern Medical School in Houston, said he had a hunch that negative results might be more reliable when newborns urinate less frequently and have more concentrated urine.

He and his team reviewed data collected on 413 infants up to 2 months old who were admitted for fever workup and treated for UTIs both in the hospital and after discharge. Nitrite results were stratified by urine concentration. A specific gravity of 1.015 was used as the cutoff between concentrated and dilute urine, which was “midway between the parameters reported” in every urinalysis, Dr. Parlar-Chun said.

Although the sensitivity of concentrated urine was only 53%, “it’s a stark difference from” the 14% in dilute urine, he said.“You should take a look at specific gravity to interpret nitrites. If urine is concentrated, you have [more confidence] that you don’t have a UTI if you’re negative. It’s better than taking [nitrites] at face value.”

The subjects were 31 days old, on average, and 62% were boys; 112 had a specific gravity above 1.015, and 301 below.

There was no external funding, and Dr. Parlar-Chun didn’t have any disclosures.

aotto@mdedge.com