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Dengue, zika and chikungunya transmitting mosquito detected in PortugalPhoto by 41330 on Pexels
ScienceCastelo Branco

Dengue, zika and chikungunya transmitting mosquito detected in Portugal

Notícias de Coimbra14 September 2026 at 16:03

The Local Health Unit (UL) of Castelo Branco today warned about the presence in the municipality of Castelo Branco of the mosquito that transmits dengue, zika and chikungunya diseases. The detection was confirmed through an entomological surveillance program implemented in the region.

The mosquito in question is Aedes aegypti, which had previously been identified in other areas of the country. Health authorities are reinforcing monitoring and control measures for the mosquito population in the affected area.

The Directorate-General for Health recommends that the population adopt prevention measures, including the elimination of places where standing water can accumulate, which serves as breeding grounds for these insects. The use of repellents and clothing that covers the skin is also advised.

Although the presence of the mosquito does not automatically mean an outbreak of diseases, authorities remain vigilant to detect early any imported cases and prevent local transmission of these infections.

Why this matters

The detection of the Aedes aegypti mosquito in mainland Portugal represents a new health threat for the population of the Castelo Branco region and potentially for the entire country. The presence of this vector increases the risk of transmission of diseases such as dengue, zika and chikungunya, which until now were considered mainly imported diseases from travel.

About this summary

This is our short summary of a report published by Notícias de Coimbra on 14 September 2026 at 16:03; the full text stays with the publisher. In our feed it sits under Science, and it concerns Castelo Branco. We currently carry 4594 items in that section.

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