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

Swift County, MN

Alert ID: 1392

September 01, 2019

Source: Minnesota Board of Animal Health

Number Confirmed: 1;
Age: 25; Gender: Mare; Breed: Not Reported; Clinical Signs: Falling, Neurological Signs; Horse Status: Euthanized; Vaccination Status: Unvaccinated;
Notes: West Nile virus (WNV) was diagnosed in a 25-year old mare in Swift county. Clinical signs of neurologic illness progressed very quickly. The mare’s owners reported the horse fell ill in the evening and was unable to rise the next morning. The horse was euthanized by the attending veterinarian. The horse had no documented history of vaccination against WNV. Three weeks prior to this case, another horse on the property presented with similar clinical signs and was euthanized but not tested for WNV. Three horses remaining on the premises appear healthy at this time and the owner plans to vaccinate them.;

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