Overview
- OPS and WHO report the region’s worst yellow fever totals in more than a decade, with roughly 350 cases and 150 deaths in 2025 and a case-fatality rate above 40%, including active outbreaks in Brazil, Colombia, Peru, Ecuador and Bolivia.
- Argentina’s August update limits free vaccination to residents and workers in Misiones, Corrientes, Formosa and specific departments of Chaco, Salta and Jujuy; travelers must use authorized private centers and pay about 214,000–220,000 pesos for the single dose.
- The national Health Ministry defends the restriction as a resource-efficiency step that cuts purchases by 34% for an estimated US$697,566 saving, while monitoring the situation without restoring universal free access for travelers.
- Leading scientific societies urge a review, warning that unvaccinated travelers could introduce the virus into areas with Aedes aegypti and low immunity, including the Buenos Aires metropolitan area.
- Buenos Aires province commits to continued free vaccination at public facilities, whereas the city government aligns with the national approach and focuses on reinforcing prevention messaging.