China is currently facing its largest outbreak of the mosquito-borne chikungunya virus, with over 7,000 confirmed cases reported since mid-June, primarily concentrated in Guangdong province, particularly in Foshan city. The outbreak peaked with nearly 3,000 weekly new cases but has since declined to 1,387 cases in the week ending August 9, with more than 90% of patients in Foshan having recovered. Authorities have implemented extensive containment measures including spraying insecticides, deploying drones, releasing lab-bred mosquitoes, public awareness campaigns, hospital quarantines, and patient isolation. The National Disease Control and Prevention Administration has issued updated technical guidelines for chikungunya prevention and control, designating Guangxi Zhuang Autonomous Region as a Category I risk area. While the virus causes fever, joint pain, and rash, fatalities are rare. Experts caution that vigilance remains necessary due to wet weather conditions in southern China, which may facilitate mosquito breeding. The outbreak has prompted warnings in neighboring regions such as Hong Kong and has led to comparisons with past mosquito-borne disease outbreaks in the Asia-Pacific region. Despite the scale of the outbreak in China, U.S. health analysts indicate the risk to the United States is limited to isolated outbreaks involving at most a few hundred people.