A new study conducted by the World Health Organization (WHO) suggests that in addition to providing significant improvements in public health, investment in the diagnosis and prevention of tuberculosis also generates economic benefits.
According to a survey conducted by governments and researchers from Brazil, Georgia, Kenya, and South Africa, even modest increases in funding for measures against tuberculosis can bring gains. Every $1 invested produces returns of as much as $39, it found.
The findings may remind governments and policymakers about the importance of investing in public health policies. According to the WHO, the study “provides strong economic arguments” about the true costs of tuberculosis and proves the benefits of increasing funding to accelerate the diagnosis and preventive treatment of the disease.
UN Targets Tuberculosis
In September 2023, during the last meeting of the United Nations General Assembly, following a widespread worsening of disease indicators because of the COVID-19 pandemic, world leaders signed a declaration committing to the expansion of efforts to combat tuberculosis during the next 5 years. The current WHO study was developed to provide a road map for the implementation of key measures against the disease.
The survey highlights two fundamental actions: The expansion of screening, especially in populations considered more vulnerable, and the provision of tuberculosis preventive treatment (TPT), which entails administering drugs to people who have been exposed to the disease but have not yet developed it.
“TPT is a proven and effective intervention to prevent the development of tuberculosis among exposed people, reducing the risk of developing the disease by about 60%-90% compared with individuals who did not receive it,” the document emphasized.
Investments Yield Returns
To achieve the necessary coverage levels, the study estimated that Brazil would need to increase annual per capita investment by $0.28 (about R$1.41) between 2024 and 2050. Brazilian society, in turn, would receive a return of $11 (R$55.27) for every dollar invested.
For South Africa, whose per capita investment increase is estimated at $1.10 per year, the return would be even more significant: $39 for every dollar allocated.
The WHO emphasized that funding for combating the disease is much lower than the value of the damage it causes to nations. “Tuberculosis has high costs for society. Only a small proportion of these costs go directly to the health system (ranging from 1.7% in South Africa to 7.8% in Kenya). Most are costs for patients and society.”
The study projected that between 2024 and 2050, the total cost of tuberculosis to Brazilian society would be $81.2 billion, with an average annual value of $3.01 billion. This figure represents, in 2024, 0.16% of the country’s gross domestic product.
Achieving screening and preventive treatment goals in Brazil would lead to a reduction of as much as 18% in the national incidence of the disease, as well as 1.9 million fewer deaths, between 2024 and 2050.
Although treatable and preventable, tuberculosis remains the leading cause of death from infectious agents worldwide. It is estimated that over 1.3 million people died from the disease in 2022.
The document provides the “health and economic justification for investing in evidence-based interventions recommended by WHO in tuberculosis screening and prevention,” according to WHO Director-General Tedros Adhanom Ghebreyesus, PhD.
“Today we have the knowledge, tools, and political commitment that can end this age-old disease that continues to be one of the leading causes of death from infectious diseases worldwide,” he added.