Mosquito-Borne Virus Spreads Alarm Across Southern Spain

As of November 17th, 2025, authorities in southern Spain are urging residents in both inland and coastal areas to take immediate precautions against a resurgent mosquito-borne virus. The advice includes using mosquito repellent at dawn and dusk, installing screens, and removing any stagnant water, which can serve as breeding grounds for the insects.

In response to the alert, extra treatments are being carried out in high-risk areas, with larval-control teams targeting wetlands, drainage channels, scrublands, and agricultural zones. Increased surveillance is also being implemented across the Cadiz and Malaga provinces, two of the most vulnerable regions for mosquito-borne diseases due to their combination of wetland habitats and dense population centers.

This classification was previously applied during outbreaks in the province of Seville, where human cases were reported in recent years. In the summer of 2024, the virus led to the deaths of five people and sparked protests calling for stronger action to address the threat.

While experts have stated that the current discovery does not pose an immediate danger to humans, they have noted that the virus is present in wildlife and is circulating closer to the Costa del Sol than in previous seasons. Authorities are stressing the importance of public cooperation to prevent the virus from spreading further.