Taiwan has confirmed its first case of chikungunya virus imported from China, where the mosquito-borne illness has surged into what experts describe as the largest outbreak the mainland has ever faced. The report comes as Chinese health officials struggle to contain more than 7,000 confirmed cases, most centered in the manufacturing hub of Foshan, just 170 kilometers from Hong Kong.
The patient in Taiwan is a woman in her 40s who visited friends in Foshan and Shenzhen in mid-July. She returned home last Wednesday and developed a fever the next day. According to Taiwan’s Centers for Disease Control (CDC), she also experienced rashes and pain in her limbs and ankles before being hospitalized last Friday. She told authorities she had been bitten by mosquitoes during her trip.
She was discharged after four days and remains under medical monitoring. Health workers have since conducted mosquito-control measures around her home to prevent any possible local transmission. The CDC reported that this is the 17th chikungunya case confirmed in Taiwan this year — all of them imported from other countries.
The outbreak in China is drawing global attention because chikungunya has never been established on the mainland before. According to University of Oxford researcher Cesar Lopez-Camacho, that means most of the population lacks immunity, allowing the virus to spread faster.
CHINA IS BACK IN LOCKDOWN – THIS TIME, IT’S MOSQUITOES
– 7,000+ infected with chikungunya, a rare mosquito virus.
– Entire districts in Guangdong sealed off.
– Patients isolated in mosquito-proof quarantine beds.
– Drones, fines, chemical sprays: full COVID-style crackdown.… pic.twitter.com/xHoqk5m8iN— HustleBitch (@HustleBitch_) August 5, 2025
CHINA IS BACK IN LOCKDOWN – THIS TIME, IT’S MOSQUITOESThe illness is not contagious between people, but it is spread through bites from infected female mosquitoes, primarily the Aedes aegypti species — the same type that can transmit dengue and Zika. The World Health Organization (WHO) says symptoms often include fever, joint pain, headache, muscle pain, swelling, and rash. Severe cases and deaths are rare, usually affecting young infants or elderly people with other health problems.
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The CDC has just issued a Level 2 travel advisory to China over the chikungunya virus caused by a mosquito bite.
Wonder how they knew… pic.twitter.com/uWSvhqu46I
— Southern FFA Family (@FFAFamily) August 7, 2025
Worldwide, more than 240,000 chikungunya cases have been reported this year across Central and South America, Africa, the Indian Ocean region, and Asia, with 90 related deaths. The U.S. Centers for Disease Control and Prevention (CDC) has issued Level 2 travel alerts — “practice enhanced precautions” — for multiple affected regions, including parts of the Indian Ocean, South Asia, Southeast Asia, South America, and Africa. For travelers to these areas, the CDC advises using insect repellent, wearing long sleeves and pants, and staying in places with air conditioning or window screens. A vaccine is available for those at high risk.
China’s response has been swift and highly visible. In Guangdong province, residents report that public health crews are spraying insect repellent on people before they enter buildings. Officials have ordered households to eliminate stagnant water where mosquitoes can breed, warning that those who refuse may face criminal charges for obstructing disease prevention. In some areas, power has reportedly been cut to homes that did not comply. Drones are being used to locate potential breeding grounds, while fish that eat mosquito larvae and larger “elephant mosquitoes” that prey on smaller mosquitoes are being released.
The CDC has issued a warning for travelers heading to China amid an outbreak that has already made thousands sick.
Chikungunya disease is spreading rapidly in certain regions, and the CDC advises visitors to consider “getting vaccinated” before traveling.
The virus behind the… pic.twitter.com/WTKYXbfFgX
— Shadow of Ezra (@ShadowofEzra) August 6, 2025
The first case in Hong Kong since 2019 was confirmed on Monday. For many in the region, the government’s aggressive tactics are stirring memories of the strict crackdowns seen during the COVID-19 pandemic.
Health officials in Taiwan and internationally are urging travelers to be cautious as the outbreak unfolds, warning that warm weather and heavy rains could make conditions ripe for the virus to spread further in the weeks ahead.
