Tiger mosquito expansion in France raises public health concerns

The tiger mosquito (Aedes albopictus) has established a permanent presence in 83 departments across metropolitan France, according to official data. Originally introduced in the early 2000s, the species has spread from the Mediterranean coast to northern and western regions through human movement and goods transport.

Health authorities, including Santé publique France and the ARS, are monitoring the insect due to its ability to transmit viruses such as dengue, chikungunya, and Zika. While these diseases are not yet endemic in mainland France, there is a significant risk of local outbreaks if travelers import the virus and mosquitoes transmit it to others.

To combat proliferation, officials urge citizens to eliminate standing water in residential areas, as females can lay up to 1,000 eggs in their lifetime. Because the mosquito is an urban species that typically stays within a 150-meter radius of its birth site, local community action is considered essential to reducing regional risks.