# Dengue fever outbreaks in Costa Rica and Colombia

> Live situation record from CLSTR: https://clstr.news/situations/dengue-fever-outbreaks-in-costa-rica-and-colombia
> Updated: 2026-08-26T22:28:34.000Z. Sources: 9. Developments: 2.

Health authorities in Costa Rica and Colombia have issued urgent warnings regarding rising dengue fever cases. 

In Costa Rica, the Ministry of Health reported 3,437 accumulated cases through epidemiological week 32 of 2026, an increase of over 1,000 cases compared to the same period in 2025. The highest incidence rates are noted in the Central Pacific Region, with hospitalizations reported in Alajuela and Puntarenas.

Colombia has recorded 72,654 cases this year, including 139 in the department of Caldas. While local cases have not yet been identified in Manizales, officials warn that the Aedes aegypti mosquito is present in several urban sectors. 

Authorities in both nations are emphasizing the elimination of mosquito breeding sites by emptying, washing, and covering water storage containers.

## Timeline

### 2026-08-26: Dengue fever cases rise in Costa Rica and Colombia

Dengue cases are rising in Costa Rica and Colombia, prompting health officials to urge the elimination of mosquito breeding sites to prevent further spread of the virus.

9 sources. https://clstr.news/cluster/dengue-fever-cases-rise-in-costa-rica-and-colombia

### 2026-07-28: Tenerife reports surge in dengue cases and issues tens of thousands of traffic fines

Tenerife logged 161 dengue cases and stepped up mosquito control, while Santa Cruz de Tenerife issued 29,665 traffic fines, mostly for illegal parking, and recorded 974 accidents with two fatalities.

3 sources. https://clstr.news/cluster/tenerife-boosts-dengue-surveillance-as-cases-near-yearly-total

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Cite as: Dengue fever outbreaks in Costa Rica and Colombia. CLSTR, https://clstr.news/situations/dengue-fever-outbreaks-in-costa-rica-and-colombia