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Dengue prevention intensifies across Latin America
Health authorities across Latin America are intensifying efforts to combat dengue, particularly as the International Day against Dengue is observed. In Argentina, several provinces are implementing diverse strategies. The University of Buenos Aires (UBA) is utilizing biological control by distributing native fish, such as Cnesterodon decemmaculatus, which can consume up to 100 mosquito larvae daily, to manage water reservoirs. In cities like Buenos Aires, Paraná, and Oberá, authorities are conducting 'descacharrización' campaigns to eliminate standing water and potential breeding sites.
In the province of Entre Ríos, officials emphasize that winter is a critical period for prevention because Aedes aegypti eggs can survive low temperatures and hatch when spring arrives. Meanwhile, in La Rioja, health systems are monitoring for both dengue and chikungunya. In the Dominican Republic, the Ministry of Health reports that dengue cases remain within the epidemiological safety zone, though active surveillance and community cleaning campaigns continue.
Other regional responses include municipal cleaning drives in Florida and Meoqui, and educational outreach in Formosa. Experts warn that climatic phenomena like El Niño may increase rainfall, potentially creating more breeding grounds, though they also note that water scarcity can lead to improper storage, which also increases risk.
Entities
Aedes aegypti · Argentina · CONICET · Fernán Quirós · Ministry of Health · Ministry of Health of Argentina · Ministry of Health of Entre Ríos · Ministry of Health of Peru · Ministry of Health of the Dominican Republic · Ministry of Human Development of Formosa · Mérida · University of Buenos Aires
Claims
What the coverage asserts, and how many sources carry each claim.
- [● 2 SOURCES] Health authorities in Entre Ríos emphasize that winter is a critical period for dengue prevention to eliminate eggs. entreriosahora.com · 03442.com.ar
- [○ 1 SOURCE] The UBA Faculty of Agronomy breeds small native fish to control Aedes aegypti larvae. diariochilecito.com
- [○ 1 SOURCE] An adult fish from the project can consume up to 100 mosquito larvae daily. diariochilecito.com
- [○ 1 SOURCE] More than 20,000 fish specimens were distributed to neighbors and organizations during 2024 and 2025. diariochilecito.com
- [● 2 SOURCES] The Formosa government conducted educational awareness sessions at a secondary school in Namqom. agenfor.com.ar · radiosiete.com.ar