In 2025, Hong Kong reported 11 locally acquired chikungunya cases as of 10 December 2025. Six of these were epidemiologically linked to the Tsing Yi Nature Trails, and genetic analysis revealed identical viral sequences, suggesting ongoing local 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.