The US CDC has updated the areas at risk for chikungunya on 16 April 2026 (Cuba no longer outbreak country). In addition, the Swiss Expert Committee for Travel Medicine assessed the risk for Mauritius, Argentina and French Guinea, (red = changes compared to last update 10 March2026):
In addition to optimal mosquito bite prevention, the Swiss ECTM recommendation include:
Chikungunya vaccination is recommended for:
- Persons >12 years of age travelling to an area with a chikungunya outbreak.
- Laboratory workers who might be exposed to the virus.
Chikungunya vaccination may be considered for:
- Persons >12 years travelling or moving to an area with elevated risk for chikungunya if planning to stay for an extended period of time or repeated stays (for example, cumulative period of 3 months or more).
Of note:
- Two chikungunya vaccines have been licensed in Europe but not yet in Switzerland.
Consultation with a travel or tropical medicine specialist is advised.
For details, see ECTM statement for chikungunya recommendation or SOP.