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Disease Alerts

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.



Douglas County, CO
Outbreak Identifier: 5465
Alert ID: 2856
January 05, 2023
Confirmed Case(s) - Voluntary Quarantine

Attending Veterinarian

Number Confirmed: 3; 
Number Suspected: 6; 
Number Exposed: Unknown; 
Facility Type: Private Facility; 
Age: 8; Gender: Mare; Breed: Pony; Usage: Pleasure Riding; Onset of Clinical Signs: 1/2/2023;
Clinical Signs: depressed, colic signs, weight loss. Tender to palpation in throat but no submandibular swelling, or abscessation detected. No fever detected. Very mild nasal discharge; Confirmation Date: 1/5/2023; Horse Status: Quarantined; Vaccination Status: Unvaccinated;

Age: 9; Gender: Gelding; Breed: Pony; Usage: Pleasure Riding; Onset of Clinical Signs: 1/4/2023;
Clinical Signs: Submandibular abscess, depression, off feed; Confirmation Date: 1/5/2023; Horse Status: Quarantined; Vaccination Status: Unvaccinated;


Age: 4; Gender: Mare; Breed: Grade; Usage: Pleasure Riding; Onset of Clinical Signs: 12/29/2022;
Clinical Signs: Bilateral nasal discharge for 3 days duration from 12/28/23-1/3/23, thick yellow mucoid; Confirmation Date: 1/5/2023; Horse Status: Quarantined; Vaccination Status: Unvaccinated;
Comments: Three horses at a private facility in Douglas County have tested positive for Strangles  For more information go to: https://www.equinediseasecc.org/strangles