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The U.S. Centers for Disease Control and Prevention warned Americans to take "enhanced precautions" while traveling to China over an outbreak of the mosquito-borne chikungunya virus.

The agency issued a fresh travel warning this month saying that cases of the illness are rapidly spreading in Guangdong province, with most being reported in the city of Foshan. Chinese health officials said more than 7,000 cases have been confirmed there since June 2025.

"Most people infected with chikungunya virus develop some symptoms. Symptoms of chikungunya usually begin 3–7 days after a bite by an infected mosquito," according to the CDC. "The most common symptoms are fever and joint pain. Other symptoms may include headache, muscl

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