Equine Disease Reports From Utah, Michigan and Ontario

More horses in Utah, Michigan and Ontario have tested positive for West Nile virus, and one Utah horse tested positive for both WNV and EEE.

The Utah Department of Agriculture confirmed three new equine cases of West Nile virus (WNV), all of which are improving.

On September 7 Utah received confirmation of WNV in a vaccinated 6-year-old Quarter Horse mare and an unvaccinated Thoroughbred stallion. Both horses were from Duchesne County, but they were on different premises. 

On September 5 Utah received confirmation of WNV in an unvaccinated 6-year-old Percheron mare in Box Elder County. She was treated and is improving. 

For more information from Utah go to: https://www.arcgis.com/home/webmap/viewer.html?webmap=05d1052335224f0da04ba5d7d2738666&extent=-119.4205,35.2414,-102.0951,42.8078.

Michigan WNV and EEE

A 5-year-old Tennessee Walking Horse mare in Roscommon County, Michigan, tested positive for WNV and Eastern equine encephalitis (EEE), according to the Michigan Department of Agriculture and Rural Development.

An unvaccinated 20-year-old grade mare from Osceola County, Michigan, tested positive for WNV.

This brings the total of Michigan horses confirmed with WNV in 2017 to 13 (two from Wexford and one each from Clinton, Livingston, Jackson, Mecosta, Midland, Missaukee, Montcalm, Ottawa, Osceola, Roscommon and St. Joseph). The total number of horses confirmed positive for EEE is two (one each from Osceola and Wexford Counties).

Ontario WNV

A 4-year-old unvaccinated Quarter Horse female from Bruce County, Ontario, Canada, developed mild neurological signs due to West Nile virus on August 27. The mare is receiving veterinary treatment. The total number of confirmed WNV cases in Ontario this year is seven, according to the Ontario Ministry of Agriculture and Food.

This article was created with information from the Equine Disease Communication Center (EDCC). The EDCC works to protect horses and the horse industry from the threat of infectious diseases in North America. The communication system is designed to seek and report real time information about disease outbreaks similar to how the Centers for Disease Control and Prevention (CDC) alerts the human population about diseases in people.

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