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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Eastern Equine Encephalitis

Madison County, NY

Outbreak Identifier: 6980

Alert ID: 4496

August 20, 2025

Confirmed Case(s) - No Quarantine

Source: State Animal Health Official

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

Horse 1:
Age: 7; Gender: Gelding; Onset of Clinical Signs: 8/12/2025; Clinical Signs: Owner worked horse and noted he was stiff and not himself. Two days later when horse was not improving, vet was called to examine him. Vet noted that horse didn't appear to be aware of his surroundings, was leaning against his stall wall and had a fever of 102.7. When he was asked to circle, he could not advance his front legs without assistance. Despite veterinary treatment, horse died the following day.; Horse Status: Deceased; Vaccination Status: Unvaccinated;

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