Tiger Mosquitoes Fuel Dengue and Chikungunya Surge in France

Tiger Mosquitoes Spread Dengue and Chikungunya Fears in France France is facing a growing threat from the tiger mosquito, with the insect now established in 81 departments across the country. This surge in mosquito population has led to a considerable increase in cases of dengue and chikungunya, vector-borne illnesses that cause fever, joint pain, and other symptoms. As of early 2025, over 2000 cases of dengue and chikungunya have been reported in mainland France. "Among the diseases we have, we have vector-borne diseases," explained Aurel Guedj, a health consultant on BFMTV. "These are diseases that are transmitted by animal vectors, or insects. Here, mosquitoes can transmit many diseases." While these cases are currently classified as "imported," meaning individuals contracted the illness abroad and returned to France, health officials are concerned about the potential for local transmission. The widespread presence of the tiger mosquito, coupled with the influx of infected individuals, creates a significant risk of the diseases becoming endemic. The expert warns of the potential for these viruses to become poorly tolerated and spread rapidly. The report underscores the need for vigilance and preventative measures to mitigate the risk of a widespread outbreak.