Outbreaks | Equine Disease Communication Center

Updates on current disease outbreaks are listed here as they occur and will include the date listed, disease name, location and current status. Specific premises will not be named but the general location by town, county and state will be listed. When locations, events or horses are at risk they will be listed. Updates will be posted as they are received.

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West Nile Virus

Simcoe, Niagara, Frontenac Counties and Algoma District, ON

Alert ID: 627

August 31, 2017

Source: Ontario Ministry of Agriculture, Food and Rural Affairs

Between August 28 and 30^th, 2017 the Ontario Ministry of Agriculture, Food and Rural Affairs confirmed four horses positive for West Nile Virus (WNV) in Ontario in the Algoma District and Simcoe, Niagara and Frontenac Counties. Three horses exhibited severe neurological signs and were euthanized. One had mild neurological signs and is recovering with veterinary treatment. Two of the severe cases were unvaccinated horses and the remaining horses had not received a WNV vaccination this year. To date in 2017, there have been six confirmed cases of WNV in horses from Ontario. In 2016, there were two confirmed cases in Ontario. For more information on WNV go to: http://www.omafra.gov.on.ca/english/food/inspection/ahw/westnilevirus.htm;

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