#VectorControl

China has reported a rapidly growing outbreak of chikungunya in southern Guangdong province that authorities say has now passed the 10,000-case mark, prompting aggressive mosquito-control measures and renewed international attention to a virus that causes fever and crippling joint pain. The spike, centred on the manufacturing hub of Foshan and already linked to cases in Hong Kong and Taiwan, has exposed vulnerabilities in urban areas where Aedes mosquitoes thrive and where population movement can seed new clusters of infection (Express: Pandemic fears erupt as China’s agonising virus hits horrifying milestone). This developing situation matters to Thailand because of frequent travel links, shared mosquito species, recent local history with chikungunya and the seasonal conditions that favour Aedes breeding across Southeast Asia (BBC: What to know about chikungunya virus as cases rise in China).

China’s extraordinary mobilization against a rapidly expanding chikungunya outbreak in Guangdong province—featuring drone surveillance, standing water fines, and enforced isolation measures—reflects the serious global health threat posed by this mosquito-borne virus in 2025. With hundreds of thousands of cases reported worldwide and local transmission now documented across multiple continents, chikungunya represents an urgent public health concern for Thailand, where competent mosquito vectors and tourism-dependent communities create significant vulnerability to imported and sustained transmission.

China’s aggressive response to a fast-moving chikungunya outbreak in Guangdong province — from drone patrols and fines for standing water to reports of enforced isolation — has drawn international attention, and with good reason. The mosquito-borne chikungunya virus (CHIKV) is causing large outbreaks across several continents in 2025, with global case counts in the hundreds of thousands and new local transmission reported in places as far afield as Europe and the Americas. Although chikungunya is rarely fatal, its abrupt, debilitating joint pain, potential for long-lasting disability, and the presence of competent mosquito vectors across Southeast Asia make the disease an urgent public-health concern for Thailand’s health authorities, travellers and communities who depend on tourism. Recent official updates, scientific guidance and media investigations together outline the scope of the current epidemic, the tools available to fight it, and practical steps Thai readers should take now to reduce risk at home and when travelling. (Sources: WHO fact sheet; ECDC situation updates; NPR reporting; LADbible coverage) WHO, ECDC, NPR, LADbible.

As the annual tick season approaches in North America, a rare but dangerous virus is attracting mounting attention: Powassan virus. While this tick-borne illness remains uncommon, recent research and rising case reports point to growing concerns that reverberate beyond Western borders—and carry valuable warnings for Thailand as well.

Powassan virus, primarily transmitted by blacklegged ticks, has been recognized as one of the most serious tick-borne diseases in the United States, despite its rarity. Last year, Minnesota reported a record 14 cases, the highest count since 2008 when official recordkeeping began. According to Minnesota Department of Health data, while most years saw fewer than five cases, a slow but concerning uptick has prompted both local and national action. “The risks are relatively low, however, all the tick prevention that you would do to keep yourself from getting one of those more common diseases will also help keep you safe from getting Powassan,” Elizabeth Schiffman, an epidemiologist supervisor at the Minnesota Department of Health, emphasized in a recent interview (Star Tribune).