Europe is experiencing a record number of outbreaks of mosquito-borne illnesses in 2025, including chikungunya.
New data published today by the Italian Istituto Superiore di Sanità (ISS) indicates that the country’s fight against chikungunya fever continued throughout the early weeks of August 2025.
On August 21, 2025, ISS reported four local transmission events of the chikungunya virus had been identified in the northern regions of Emilia-Romagna and Veneto in two outbreaks.
Chikungunya is a viral disease transmitted to people by virus-carrying mosquitoes, often found in these regions’ altitudes, through November each year.
From January to August 19, 2025, Italy’s national surveillance system has recorded 66 confirmed cases of chikungunya (37 travel-associated cases and 29 indigenous (local) cases, and no related deaths, with a median age of 53 years.
From a prevention perspective, the U.S. CDC recommends either of the two approved chikungunya vaccines for international travelers visiting outbreak zones in 2025.
These vaccines, and other travel vaccines, are commercially offered at certified clinics and pharmacies in the United States.