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.

Disease

Outbreak States

Start Date

End Date

Equine Herpesvirus- Respiratory

Fauquier County, VA

Outbreak Identifier: 6767

Alert ID: 4259

March 12, 2025

Confirmed Case(s) - Voluntary Quarantine

Source: Attending veterinarian

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

Horse 1:
Age: 10; Gender: Gelding; Breed: Friesian; Onset of Clinical Signs: 3/6/2025; Clinical Signs: The horse presented to the referring veterinarian for fever, with temperatures up to 104.7 F. He was subsequently referred to a hospital and admitted into the isolation unit with improving clinical signs. He tested positive for EHV-4 on PCR of nasal swab; Confirmation Date: 3/11/2025; Horse Status: Isolated; Vaccination Status: Status Unknown;

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