Chikungunya Outbreak in Guangdong Province, China – September 21–27, 2025

On September 28, 2025, the Guangdong Provincial Center for Disease Control and Prevention (CDC) reported that from 0:00 on September 21 to 24:00 on September 27, a total of 3,153 locally transmitted Chikungunya cases were recorded in the province. No severe or fatal cases have been reported.

Case Distribution by City:

• Jiangmen: 2,927 cases
• Foshan: 78 cases
• Guangzhou: 68 cases
• Shenzhen: 22 cases
• Zhuhai: 13 cases
• Dongguan: 7 cases
• Qingyuan & Zhanjiang: 6 each
• Zhaoqing: 5
• Shantou: 4
• Shaoguan, Meizhou, Zhongshan, Chaozhou: 3 each
• Maoming, Huizhou, Shanwei, Yangjiang, Yunfu: 1 each

Expert Commentary:

Dr. Kang Min, Director of the Infectious Disease Prevention and Control Department at Guangdong CDC, noted that Jiangmen has recently experienced a Chikungunya outbreak. The local government has activated a Level III public health emergency response and is fully mobilizing to contain the outbreak.

Although the rapid rise in cases has been initially curtailed, the outbreak remains at a relatively high level. With the upcoming Mid-Autumn and National Day holidays, increased population movement and outdoor activities raise the risk of mosquito bites, and therefore, continued vigilance and preventive measures are crucial.

Dr. Kang advises:

• Avoid traveling to high-risk areas during holidays.
• Wear light-colored, long-sleeved clothing outdoors.
• Apply mosquito repellent to exposed skin.

Seek medical care promptly if experiencing fever, joint pain, or rash, and avoid travel until diagnosis is confirmed.

Prevention Measures:

Chikungunya is transmitted by Aedes mosquitoes, which breed in small, clean water containers. Removing standing water and clearing containers is critical for controlling the outbreak.

Residents are urged to participate in anti-mosquito efforts: use mosquito nets and screens, eliminate standing water, clean garbage, use mosquito coils or repellents, and kill adult mosquitoes.

The CDC recommends the “1130” anti-mosquito campaign:

• 1 minute to clear standing water before and after work
• 1 weekly major cleaning
• 3 minutes daily to check mosquito breeding sites

By practicing these measures, communities can strengthen collective prevention and control efforts to safeguard public health.