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.

Travelers to some parts of China should take precautions amid an outbreak of chikungunya disease, U.S. health officials said. What is it? Chikungunya disease is caused by the chikungunya virus, which spreads to humans through mosquito bites,