Daijiworld Media Network - Tokyo

Tokyo, Apr 11: In a concerning development, Japan has reported an outbreak of equine influenza at three horse breeding farms in Kumamoto prefecture the first such case in the country since 2008.

According to the Light Horse Quarantine Council, the highly contagious viral infection was confirmed during routine health checks, prompting immediate containment measures. Infected horses have been isolated, and all movement of animals at the affected sites has been suspended. Authorities have also begun mass vaccination drives and disinfection of facilities to prevent further spread.

Equine influenza is a viral respiratory disease that primarily affects horses, donkeys, and other equine species. It spreads rapidly through direct inhalation of infected respiratory secretions and, in some cases, via indirect means such as contaminated equipment, clothing, or shared water.

Veterinary experts warn that horses aged between one and five years are particularly vulnerable, especially when housed in large groups. Animals under physical stress, such as those frequently transported or undergoing intensive training, are also at heightened risk.

Japan’s last major outbreak in 2007 led to the suspension of central horse racing events, causing widespread economic disruption. The disease can have a serious impact on the equine industry, particularly in countries like Japan, China, and Australia, which saw large-scale epidemics in 2007 affecting tens of thousands of horses.

Though regular vaccinations can offer protection, experts caution that vaccinated horses may still act as subclinical carriers and contribute to the spread. The scale of an outbreak often hinges on the immunity level of the equine population and the characteristics of the virus strain in circulation.

Preventive efforts in Kumamoto remain ongoing, as authorities urge breeders and farm owners across the country to remain vigilant and report any suspicious symptoms promptly.