As of 29 December 2025, Thailand has reported 1’379 chikungunya cases, roughly double the 690 cases recorded during the same period in 2024. The northern region, particularly Chiang Mai, has the highest burden: Chiang Mai has reported 462 cumulative cases and an incidence of 28.3 per 100’000 population - the highest among all provinces.
According to the U.S. CDC, Thailand is considered as a country with elevated risk for chikungunya transmission.
Optimal mosquito protection 24/7, also in cities, see factsheet: Optimal mosquito and tick bite protection 24/7. This also protects you against other mosquito-borne diseases. Vaccination against chikungunya is not licensed in Switzerland.
For vaccination recommendations, see ECTM statement.