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

Chautauqua County, NY

Outbreak Identifier: 6988

Alert ID: 4504

August 22, 2025

Confirmed Case(s) - No Quarantine

Source: State Animal Health Official

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

Horse 1:
Age: 3; Gender: Filly; Onset of Clinical Signs: 8/10/2025; Clinical Signs: 5 day duration of lethargy, decreased water/feed intake, possibly laminitic. Vet came to examine on day 5 and noted: ataxia, proprioceptive deficits, inability to stand on her own, muscle fasciculations on head, neck and hindquarters.; Horse Status: Recovering; Vaccination Status: Unvaccinated;

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