Hong Kong's Third Local Chikungunya Case Confirmed

The Government of the Hong Kong SAR's Center for Health Protection (CHP) of the Department of Health today announced a third locally acquired case of chikungunya fever (CF) in a middle-aged man living in the Kwai Tsing District and working in Sheung Wan.

As of November 4, 2025, the CHP will conduct genome analysis to determine whether it has epidemiological linkage to the imported cases confirmed earlier in Hong Kong. Investigation is ongoing.

Kong Kong's initial CF case was reported on October 28, 2025.

In response to the new local case, the CHP today has conducted an inter-departmental meeting with various departments and relevant organisations.

To alert international travelers to the expanding CF health risk in this region, the U.S. CDC published a Level 2—Practice Enhanced Precautions —Travel Health Notice in late August 2025.

The CDC stated that you can protect yourself by preventing mosquito bites, which includes using insect repellent, wearing long-sleeved shirts and pants, and staying in places with air conditioning or with screens on the windows and doors. 

Additionally, the CDC recommended vaccination for certain travelers visiting areas with chikungunya outbreaks. In general, vaccination against chikungunya should be deferred until after delivery for pregnant women.

In the United States, approved chikungunya vaccines are commercially available at travel clinics and pharmacies.