Dengue-Transmitting Mosquito Detected in Covilhã
The presence of the Aedes albopictus mosquito, commonly known as the tiger mosquito, has been confirmed in Covilhã, a municipality in the Castelo Branco district of Portugal. This species is notorious for transmitting various diseases including dengue fever, Zika virus, and chikungunya. This alarming finding was announced by the Cova da Beira Local Health Unit (ULS), prompting urgent calls for community action to mitigate the potential spread of these diseases.
Understanding the Threat
The Aedes albopictus mosquito has become increasingly prevalent in different regions of Portugal, previously detected in Cascais and Pombal. Its ability to thrive in various climates raises concerns, particularly given its capacity to transmit serious illnesses. In July 2024, the Directorate-General of Health (DGS) issued new recommendations for municipalities and various sectors, emphasizing the need for enhanced prevention and control measures against this invasive species.
Community Initiatives to Combat Mosquito Breeding
In light of this threat, the ULS of Cova da Beira has urged residents to take proactive measures to reduce breeding sites for mosquitoes. These actions include:
- Eliminating or turning over containers that collect water, such as flowerpot saucers, buckets, and bottles.
- Covering water storage tanks, wells, and cisterns to prevent mosquito access.
- Regularly changing water in pet bowls and bird baths at least once a week.
- Maintaining swimming pools by treating them properly or covering them when not in use.
Personal Protection Measures
Apart from community efforts, individual protective measures are essential in minimizing the risk of mosquito bites. The following recommendations have been issued:
- Use repellents that contain DEET, Picaridine, IR3535, or lemon eucalyptus oil (OLE).
- Wear long-sleeved shirts and long pants, especially around dawn and dusk when mosquitoes are most active.
- Install mosquito nets over windows and doors to keep these pests out.
Reporting and Monitoring Cases
In the event of being diagnosed with a mosquito-borne illness such as dengue, Zika, or chikungunya, it is crucial to report the case promptly to the National Epidemiological Surveillance System (SINAVE). Monitoring is key to controlling outbreaks and ensuring public health safety.
Historical Context and Future Vigilance
The invasion of Aedes mosquitoes in Portugal began with the detection of Aedes aegypti in Madeira in 2005, while Aedes albopictus was first noted on the mainland in 2017. This invasive species has been expanding its range across the country, highlighting the need for continued vigilance and community-based control efforts.
As residents of Covilhã face this new public health challenge, collective action and awareness can significantly mitigate risks. By following the guidelines provided by health authorities and maintaining a proactive stance, the community can help prevent the potential spread of dengue and other mosquito-borne diseases.
