The Lake Geneva region is mobilizing against the tiger mosquito. A Franco-Swiss campaign has been launched to raise public awareness of this invasive species, which could ultimately represent a health risk.
This unprecedented collaboration was born under the impetus of the Conseil du Léman, which brings together the cantons of Vaud, Geneva and Valais as well as the French departments of Ain and Haute-Savoie.
Véronique Baude, president of the Environment Commission of the Lake Geneva Council vice-president of Ain, reminded the press that the tiger mosquito had been present in her department since 2015 and that it never ceased to proliferate in the region. , where it benefits from global warming. The undesired was first reported in Geneva and Monthey (VS) in 2019, but not yet in Vaud. Elsewhere in Switzerland, he moved to Ticino in 2003 before moving to Basel and Zurich in particular.
Native to Southeast Asia, the tiger mosquito has the particularity of moving in vehicles, then settling in small volumes of water to reproduce. “The big problem is that these water points are very numerous in gardens, on balconies and, in general, in urban areas”, explained Daniel Cherix, honorary professor at the University of Lausanne (UNIL ) and active in the Swiss Mosquito Network.
Prevention campaigns have already been carried out in the cantons, but the objective now also consists of disseminating the same message to the entire Lake Geneva basin and to its three million inhabitants.
The population is also called upon to participate in spotting this insect, by reporting its presence on a dedicated website (www.moustiques-suisse.ch).
Measuring between 5 and 10 minutes, the tiger mosquito is recognizable by its body and its legs striped in black and white. It bites during the day, several times, and can be a vector of dengue, zika or chikungunya. However, it only transmits these diseases when it has bitten someone who is already infected.