China is confronting an outbreak of the mosquito-borne chikungunya virus, with over 7,700 cases reported in Guangdong province since early July. The southern city of Foshan, particularly the Shunde district, has been a hotspot, recording thousands of cases, though daily new infections have been declining since late July. The outbreak has prompted authorities to implement a range of public health measures, including the release of mosquito-eating fish, citywide cleanup efforts, real-name registration for fever and pain relief medication purchases, reinstatement of mass testing, travel history reporting, and community-level disinfection. These interventions resemble some Covid-era controls, which have been revived in Guangdong to curb the virus's spread. The Centers for Disease Control and Prevention (CDC) in the United States has issued a Level 2 travel alert advising enhanced precautions for travelers to China amid the outbreak. Globally, chikungunya infections have reached approximately 240,000 cases. The virus causes fever and severe joint pain, which can last for years, but it is not transmitted from person to person. The Guangdong provincial health authorities have also introduced a new feature on their mosquito-borne disease map to alert residents to transmission risks and travel advisories. The outbreak has been exacerbated by heavy rainfall and thriving mosquito populations. Meanwhile, Hong Kong has reported its first imported chikungunya case since 2019, linked to Foshan, Guangdong. China’s efforts to contain the outbreak have shown some progress, with a recent slowing of new cases in Foshan. The World Health Organization has urged preventive measures in response to the outbreak.