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

Strangles

Warren County, VA

Outbreak Identifier: 6788

Alert ID: 4283

March 27, 2025

Confirmed Case(s) - Voluntary Quarantine

Source: Attending Veterinarian

Number Confirmed: 2;
Number Suspected: Unknown;
Number Exposed: 20;
Facility Type: Private Facility;

Horse 1:
Age: Weanling; Gender: Filly; Breed: Mustang; Onset of Clinical Signs: 3/22/2025; Clinical Signs: Fever 103, Profuse bilateral nasal discharge, lymphadenopathy, lethargy, cough, inappetance; Confirmation Date: 3/26/2025; Horse Status: Affected And Alive; Vaccination Status: Status Unknown;

Horse 2:
Age: Weanling; Gender: Filly; Breed: Mustang; Onset of Clinical Signs: 3/22/2025; Clinical Signs: Fever, Lethargy, bilateral nasal discharge, cough, inappetance; Confirmation Date: 3/26/2025; Vaccination Status: Unvaccinated;

Comments: Two weanlings with a history of being shipped with a group of 20 weanlings from a feedlot in Arizona to sites in Pennsylvania, Michigan, Wisconsin and Virginia arrived in Virginia with fevers, profuse nasal discharge and lymphadenopathy. The two weanlings tested positive on PCR for Strep zooepidemicus, Strep equi equi and EHV 4 on nasal PCR. Weanlings are being quarantined voluntarily on private farm.;

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