Six European Countries Confirm West Nile Virus Cases in 2025

Since the beginning of 2025, and as of August 6, 2025, six countries in Europe have reported human cases of West Nile virus infection: Bulgaria, France, Greece, Hungary, Italy, and Romania.

Italy's health ministry says Most infected people show no symptoms. Of those who do, about 20% have mild symptoms: fever, headache, nausea, vomiting, swollen lymph nodes, and skin rashes.

However, as of August 10, 2025, Italy has reported 13 related fatalities in 2025, with new cases reported in Caserta and Lazio.

Currently, there are no vaccines authorized to protect people from this mosquito-transmitted virus.