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

Grayson County, KY

Outbreak Identifier: 7037

Alert ID: 4558

September 05, 2025

Confirmed Case(s) - No Quarantine

Source: Kentucky Department of Agriculture

Number Confirmed: 1;
Number Exposed: Unknown;
Facility Type: Private Facility;

Horse 1:
Age: 5; Gender: Mare; Breed: Standardbred; Usage: Transportation; Onset of Clinical Signs: 8/27/2025; Clinical Signs: Owner noticed 'not right'. Presented 8/28 Head Down, Lethargic, front limb ataxia; Confirmation Date: 9/4/2025; Horse Status: Deceased; Vaccination Status: Unvaccinated;

Comments: This is KY's 6th confirmed equine West Nile case for 2025;

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