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.

The chikungunya virus has infected more than 7,000 people across at least 13 cities in China, prompting authorities to implement strict precautions, even though the virus cannot be transmitted from person to person.

China has reported 7,000 cases of chikungunya since initial reports surfaced in early July 2025, but the Centers for Disease Control and Prevention has also identified current outbreaks in countries like Bolivia, Kenya, and Sri Lanka. Chikungunya can cause serious problems or death in extreme cases.