# Public health measures against arboviruses in Brazil

> Live situation record from CLSTR: https://clstr.news/situations/public-health-measures-against-arboviruses-in-brazil
> Updated: 2026-10-05T18:08:47.000Z. Sources: 17. Developments: 2.

Brazilian municipalities are implementing various public health measures to combat mosquito-borne diseases and viral outbreaks. In Balneário Camboriú, dengue cases reportedly dropped by 99.8% compared to 2024, utilizing the Wolbachia method and new insecticides. Other regions, such as Rio Claro and Campo Grande, are conducting inspections and spraying to manage dengue risks, while Itajaí has intensified rodent control following a hantavirus fatality.

Efforts to control the Aedes aegypti mosquito have continued, with Tangará da Serra reporting a reduction in high-infestation “red areas” from 88 to 24. In Dourados, a task force has been launched to focus on urban cleaning and the elimination of breeding sites, following a public health emergency decree issued after a chikungunya epidemic caused 19 deaths.

## Timeline

### 2026-10-05: Brazilian municipalities intensify combat against Aedes aegypti

Brazilian municipalities Tangará da Serra and Dourados are intensifying combat operations against Aedes aegypti to prevent dengue, zika, and chikungunya outbreaks.

2 sources. https://clstr.news/cluster/brazilian-municipalities-intensify-combat-against-aedes-aegypti

### 2026-09-28: Brazil municipalities intensify combat against dengue and hantavirus

Brazilian cities are intensifying health efforts, including mosquito control in Balneário Camboriú and Rio Claro, and rodent prevention in Itajaí following a fatal hantavirus case.

15 sources. https://clstr.news/cluster/rio-claro-reports-26-dengue-cases-as-health-officials-increase-inspections

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Cite as: Public health measures against arboviruses in Brazil. CLSTR, https://clstr.news/situations/public-health-measures-against-arboviruses-in-brazil