Argentina's Dengue Season Starts Slowly

Since the start of the 2024/2025 dengue season in the Argentine Republic during week #31 of 2024, 1,443 cases have been confirmed by the Ministry of Health.

As of March 10, 2025, 96.9% of these dengue cases had no travel history, indicating substantial local mosquito transmission.

Argentina's Central (816) and Northwest (237) regions have reported the most cases this season.

There have been 45 cases with a travel history corresponding to people who traveled to Brazil, Cuba, Mexico, the Maldives, Thailand, India, Peru, Paraguay, and Colombia.

Likewise, millions of international travelers arrived in Argentina last year, most visiting Buenos Aires.

In 2024, about 581,000 dengue cases and 400 related fatalities were reported in Argentina. 

As part of the Strategic Plan for Dengue Prevention and Control 2024-2025, Argentina's Minister of Health, Mario Lugones, chaired a meeting on March 11, 2025, regarding actions being carried out, the results achieved to date, and the lines of work to be followed to support and strengthen the jurisdictions' response capacity to address future dengue outbreaks,

Progress was also shared on developing a new national dynamic map that will include geographic, demographic, and climatic data linked to rainfall and temperature records across the country. This will allow for the adoption of preventive measures and the anticipation of potential dengue outbreaks.

To alert international visitors of the health risk, the U.S. CDC reissued a Travel Helath Advisory for the dengue epidemic in the Americas. Since dengue vaccines are currently unavailable in the U.S., the CDC recommends avoiding mosquito bites for travelers to endemic areas.

Additionally, Argentina's Zika virus outbreak has accelerated in 2025, now recording 288 cases this year.

The CDC does recommend various routine and travel vaccinations, such as for chikungunya and yellow fever, before visiting Argentina in 2025.