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: 6979

Alert ID: 4495

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: 5; Gender: Gelding; Onset of Clinical Signs: 8/13/2025; Clinical Signs: Owner noticed horse was lethargic. The following day, horse was down in pasture. Vet came to examine and found a depressed but responsive horse. It couldn't rise without assistance. It had a fever of 102.5. Despite veterinary treatment, the horse died the following day.; Horse Status: Deceased; Vaccination Status: Unvaccinated;

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