Brazil’s Success in Eliminating Mother-to-Child HIV Transmission: Global Health Lessons

Brazil has become the first country with a population exceeding 100 million to achieve validation for the elimination of mother-to-child transmission (MTCT) of HIV as a public health problem. The milestone, validated by the World Health Organization (WHO) in 2025, demonstrates that large-scale elimination targets are attainable even within complex, geographically diverse, and socially diverse health systems.

According to a report published May 1, 2026, in Nature Medicine, Brazil’s success is significant given the scale of its domestic epidemic. The country has more than 213 million inhabitants and an estimated 1.6 million people living with HIV, accounting for nearly 60% of all cases in Latin America and the Caribbean.

Defining Elimination

The WHO does not define elimination as the complete absence of all cases. Instead, it is defined as the sustained achievement of specific epidemiological and programmatic targets. To reach this status, Brazil had to meet several rigorous benchmarks:

• A transmission rate below 2%.
• Fewer than 50 new pediatric infections per 100,000 live births.
• Coverage exceeding 95% for antenatal care.
• Coverage exceeding 95% for HIV testing during pregnancy.
• Coverage exceeding 95% for antiretroviral treatment (ART) for pregnant women living with HIV.

Brazil successfully met all of these benchmarks to secure the validation.

Systemic Factors in Success

The achievement is attributed to Brazil’s long-standing commitment to universal and free access to health services through its Unified Health System (SUS). This framework is anchored in a robust primary health-care system and a commitment to human rights, allowing the government to deploy maternal, neonatal, and HIV services across a vast territory.

The ability to maintain high coverage rates for testing and treatment—specifically exceeding 95% for ART among pregnant women—highlights the operational capacity of the SUS to manage a large-scale public health intervention despite the complexities of the country’s geography and population size.

Global Health Implications

The Brazilian model serves as a case study for other large nations struggling with HIV transmission. By integrating HIV care into the broader primary health-care infrastructure, Brazil has shown that the operational challenges of a diverse and populous nation can be overcome through systemic investment and universal access.

The findings published by authors from the Instituto Nacional de Infectologia Evandro Chagas (INI) and Fundação Oswaldo Cruz (Fiocruz) suggest that these lessons are applicable to other large-scale global health systems aiming for similar elimination goals.