U.S. health officials are warning travelers headed to southern China of an outbreak of chikungunya, a mosquito-spread disease that spurred a forceful response.

The U.S. Centers for Disease Control and Prevention has issued a travel warning following an outbreak of a mosquito-borne illness called chikungunya in China. The CDC's warning centers on Guangdong Province, where the outbreak has exceeded 7,000 confirmed cases since June 2025, according to Chinese health officials.