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

LaGrange County, IN

Outbreak Identifier: 7075

Alert ID: 4595

September 18, 2025

Confirmed Case(s) - No Quarantine

Source: Indiana State Board of Animal Health

Number Confirmed: 1;
Number Exposed: Unknown;
Number Euthanized: 1;

Horse 1:
Age: 6; Gender: Gelding; Breed: Standardbred; Onset of Clinical Signs: 9/10/2025; Clinical Signs: The owner described seizure-like activity after becoming acutely down on 09-10-25. The patient presented in lateral recumbency with a temperature of 108.6. The patient was still blinking but did not display a menace response.; Confirmation Date: 9/16/2025; Horse Status: Euthanized; Vaccination Status: Unvaccinated;

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