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

Calhoun County, MI

Alert ID: 344

October 13, 2016

On October 10, the Michigan Department of Agriculture and Rural Development was notified of a confirmed case of West Nile virus (WNV). This is Michigan’s first reported case of WNV in equine for 2016. The affected horse is a five-month old filly in Calhoun County. On October 2, the filly began to develop signs of illness, including stumbling and lethargy. The unvaccinated filly is responding to treatment. The dam was vaccinated against WNV two weeks after foaling, and the filly is not yet weaned.

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