Given the increase in cases of yellow fever registered in the countries of the region, the Ministry of Health reports that Argentina maintains a stable epidemiological situation with no record of imported human cases since 2018 or indigenous circulation since 2009. Likewise, the health portfolio supports work with provinces at risk of viral circulation and other State agencies to reinforce surveillance, prevention and early detection of possible cases.
The Pan American Health Organization (PAHO) reported an increase in yellow fever viral activity during 2025, with outbreaks recorded mainly in Brazil and Colombia, and isolated cases in Bolivia. In Brazil, epizootics, that is, the outbreak of this disease in animals, were reported in the states of Minas Gerais and São Paulo, while in Bolivia a human case was recorded in the department of Tarija, close to the border with Argentina.
Although Argentina does not present confirmed epizootics or human cases, in this scenario the country has reinforced active surveillance of primates and mosquitoes in coordination with the provincial services and the laboratories of the National Diagnostic Network that have the capacity for the molecular detection of yellow fever and the monitoring of adverse events associated with vaccination. So far this year, 142 suspected cases in humans and 5 have been studied. epizootics whose results were negative.
In turn, the National Ministry of Health plans to send 44,600 new doses to areas at risk of viral circulation, which include the provinces of Formosa, Misiones, Corrientes and specific departments of Jujuy, Salta and Chaco. This new shipment is added to the 425,100 vaccines distributed by the national government during 2025 and its objective is to strengthen the immunization strategy that, in these areas, is part of the National Vaccination Calendar and which contemplates the application of a dose at 18 months and a booster at 11 years.
In jurisdictions where there is no risk of transmission, vaccination is only recommended for travelers heading to areas with proven circulation or who require it due to the requirements of the destination country. The vaccine offers lifelong protection and must be applied at least ten days before travel. Currently, the national health portfolio works together with the Ministry of Tourism, Environment and Sports of the Nation and the National Directorate of Migration to reinforce recommendations for travelers and ensure that citizens have appropriate guidance if they travel to countries with circulation of the virus.
In August of this year, the national portfolio made the decision to guarantee the distribution of the vaccine only in territories at risk of circulation. This measure seeks to optimize the use of State resources by prioritizing the protection of populations exposed to the jungle cycle of transmission. With these measures, the health portfolio reaffirms its leadership and planning role, guaranteeing that resources and vaccines reach where they are really needed.
