6th Equine WNV Case Confirmed in Ontario
Edited Press Release
September 23, 2025
An undervaccinated mare in the Regional Municipality of Peel, Ontario, has tested positive for West Nile virus.
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An undervaccinated mare in the Regional Municipality of Peel, Ontario, has tested positive for West Nile virus.
One horse contracted the disease after new boarders moved to the farm.
The horse lives in Cecil County, where one other horse is suspected to be positive.
Two horses in Utah, located in Box Elder and Rich counties, have tested positive for West Nile virus.
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The cases are located in Grayson, Fayette, and Lyon counties.
The mare lives in Stanislaus County and is recovering.
The horse lived in LaGrange County.
The horses live in Marion and Alachua counties.
The case is located in Montgomery County.
The horse lives in Twin Falls County.
An unvaccinated mare in St. Croix County, Wisconsin, has tested positive for West Nile virus.
The gelding lives in Contra Costa County.
The cases are located in Salt Lake and Uintah counties.
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