On August 9, 2014, the Ontario Ministry of Agriculture, Food and Rural Affairs was notified of a confirmed case of Eastern Equine Encephalitis in a horse in the United Counties of Stormont, Dundas and Glengarry. The 12-year old unvaccinated gelding with no travel history was euthanized following the sudden onset and progression of fever and neurological signs. According to public health veterinarians, the mortality rate in unvaccinated horses is high. EEE virus affects mainly equine species in eastern North America, but can occasionally cause severe disease in humans, including permanent brain damage or death. EEEV can be passed to humans by mosquitoes. The Public Health Unit has not found the virus in any of the mosquitoes it has tested this year.