This is the first indigenous case detected in France. A case of Western Nile virus, or West-Nile virus, was discovered in the Var, in Hyères. A first contamination that listed in Public Santé France which specifies that the patient presented the first symptoms on July 15.
It is a virus whose contamination is particularly monitored in France. In its latest bulletin published this Wednesday, July 30, Public Health France lists the first indigenous case of 2025 from the Western Nile virus, also called West-Nile. The patient is on the side of Provence-Alpes-Côte d´Azur, and more precisely in Hyères.
Contamination at the West Nile virus are particularly monitored in France, explains Public health France. Surveillance “Based on compulsory reporting, which primarily aims to avoid serious forms by securing products from the human body”.
What is the West Nile?
This virus is transmitted exclusively by mosquitoes of the genus Culex, very common mosquitoes in France. They bite mainly in the evening or at night. According to our colleagues from France 3mosquitoes are contaminated by pricking birds infected with it and can then transmit to humans.
In most cases, for humans, contamination is asymptomatic, but sometimes the virus can be characterized by influenza symptoms such as fever or headache. ARS specifies that rashes can sometimes take place. In case of similar symptoms or even muscle pain or behavioral disorders, the best is to consult your attending physician.
There is no treatment or vaccine against virus and health agencies recommend to cover well and wear large clothes to avoid bites.
