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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West Nile Virus

Douglas County, CO

Outbreak Identifier: 6909

Alert ID: 4423

July 03, 2025

Confirmed Case(s) - No Quarantine

Source: State Veterinarian

Number Confirmed: 1;
Number Suspected: 1;
Number Exposed: Unknown;
Facility Type: Private Facility;

Horse 1:
Age: 6; Gender: Gelding; Breed: Quarter Horse (QH); Usage: Horse Show; Onset of Clinical Signs: 6/30/2025; Clinical Signs: Grade 3-4 Ataxia of hind limbs.; Confirmation Date: 7/3/2025; Horse Status: Affected And Alive; Vaccination Status: Unvaccinated;

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