A new outbreak of chikungunya, a mosquito-borne illness causing prolonged joint pain, has been reported in Foshan, Guangdong province, China. Over 8,000 cases have been confirmed locally, with additional cases detected in Hong Kong and Macao. Chinese health officials are deploying drones to spray repellent and releasing fish to combat the spread of the disease.
Chikungunya was first identified in Tanzania in 1952 and has since spread to over 100 countries. The virus is transmitted through two species of mosquito, Aedes aegypti and Aedes albopictus. Symptoms include fever, joint pain, and swelling, typically beginning three to seven days after infection.
The disease is rarely fatal but can be debilitating, with joint pain lasting weeks or even years. There is no specific treatment available, but two vaccines are available in the US, although none are available in China. Preventative measures such as insect repellent and wearing protective clothing are advised to prevent mosquito bites.
Chinese health authorities are relying on preventative measures rather than vaccines due to limited availability. The CDC advises travelers to take precautions, including vaccination if visiting an outbreak area or moving to a high-risk country for an extended period. Dr. Peter Chin-Hong warns that despite vaccine development, implementation in affected areas remains crucial to contain the spread of the disease.
Source: https://www.washingtonpost.com/health/2025/08/06/chikungunya-virus-outbreak-china-symptoms-cause