China is confronting an outbreak of the mosquito-borne chikungunya virus, with over 7,700 cases reported in Guangdong province since early July 2025. The outbreak has prompted authorities in Foshan city and other areas within Guangdong to implement a range of measures reminiscent of COVID-19 pandemic controls, including real-name registration for purchasing fever and pain relief medications, widespread insecticide spraying, deployment of mosquito-eating fish, drone surveillance of mosquito breeding sites, and installation of mosquito nets in drainage systems. The outbreak has been exacerbated by heavy rainfall and thriving mosquito populations. Daily new cases in Foshan have shown a decline over more than a week, with 1,387 new cases reported from August 3 to 9, down from 2,892 cases the previous week. The majority of cases have been mild, and more than 90% of patients in Foshan have recovered. The U.S. Centers for Disease Control and Prevention (CDC) has issued a Level 2 travel advisory for China, warning travelers to take enhanced precautions amid the outbreak. Hong Kong has reported five imported cases of chikungunya fever, raising concerns about regional spread. While the virus is not transmissible from person to person, it causes symptoms such as fever, joint pain, and rash, typically appearing 3 to 7 days after a mosquito bite. The CDC indicates the outbreak poses limited risk to the U.S., with potential for isolated outbreaks involving at most a few hundred cases. Authorities continue to intensify efforts to control the virus's spread, mobilizing health apparatus in a manner not seen since the COVID-19 pandemic.