# Dengue prevention efforts in Argentina

> Live situation record from CLSTR: https://clstr.news/situations/dengue-prevention-efforts-in-argentina
> Updated: 2026-08-26T23:43:20.000Z. Sources: 30. Developments: 2.

Health authorities and institutions in Argentina continue to employ various methods to prevent the spread of mosquito-borne diseases like dengue, Zika, and Chikungunya.

In Salta, local authorities, the police, and the Argentine Army have conducted cleaning and waste removal operations in public spaces such as the Esteco canal and El Aybal neighborhood to eliminate debris and used tires. Nationwide, strategies include biological control and educational outreach. In Buenos Aires, the University of Buenos Aires (UBA) has distributed native fish, such as ‘madrecitas de agua’ (Cnesterodon decemmaculatus), to consume mosquito larvae in water reservoirs; these fish are capable of consuming up to 100 larvae per day.

As the 2026/2027 season approaches, prevention, surveillance, and awareness campaigns have intensified across several provinces, including Buenos Aires, Entre Ríos, La Rioja, Misiones, Formosa, and Paraná. These efforts focus on the elimination of standing water to destroy Aedes aegypti breeding sites, community cleaning drives, and epidemiological monitoring. In Oberá, Misiones, authorities are utilizing the LIRAa tool to map infestation levels.

Recent efforts have coincided with the International Day against Dengue. In Entre Ríos, officials have highlighted that winter is a critical period for prevention, as Aedes aegypti eggs can survive low temperatures and hatch upon the arrival of spring. In La Rioja, health systems are actively monitoring for both dengue and chikungunya. Authorities in cities such as Buenos Aires, Paraná, and Oberá are conducting ‘descacharrización’ campaigns to eliminate potential breeding sites. Experts have noted that climatic phenomena like El Niño may increase rainfall and create more breeding grounds, though water scarcity can also increase risk through improper storage.

## Claims

- Health authorities in Entre Ríos emphasize that winter is a critical period for dengue prevention to eliminate eggs. (corroborated by 2 sources)
- The Formosa government conducted educational awareness sessions at a secondary school in Namqom. (corroborated by 2 sources)
- The UBA Faculty of Agronomy breeds small native fish to control Aedes aegypti larvae. (single source)
- An adult fish from the project can consume up to 100 mosquito larvae daily. (single source)
- More than 20,000 fish specimens were distributed to neighbors and organizations during 2024 and 2025. (single source)

## Timeline

### 2026-08-26: Dengue prevention intensifies across Latin America

Health authorities in Argentina, the Dominican Republic, and other regions are ramping up dengue prevention through biological controls, community cleaning, and intensive epidemiological surveillance.

30 sources. https://clstr.news/cluster/argentina-implements-diverse-dengue-prevention-strategies

### 2026-08-12: Salta authorities conduct cleaning operations to combat disease vectors

Salta authorities, including the police and the Argentine Army, are conducting cleaning and waste removal operations to recover public spaces and prevent the proliferation of Dengue and other mosquito-bornedise

2 sources. https://clstr.news/cluster/salta-authorities-conduct-cleaning-operations-to-combat-disease-vectors

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Cite as: Dengue prevention efforts in Argentina. CLSTR, https://clstr.news/situations/dengue-prevention-efforts-in-argentina