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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.



Adams County, CO
Outbreak Identifier: 7278
Alert ID: 4816
December 31, 2025
Confirmed Case(s) - Official Quarantine

State Veterinarian's Office

Number Confirmed: 1; 
Number Exposed: 13; 
Number Euthanized: 1; 
Facility Type: Training Facility; 

Horse 1: 
Age: 5; Gender: Mare; Breed: Quarter Horse (QH); Usage: Racing; Clinical Signs: Unthrifty, poor body condition, tested for interstate movment requirements; Confirmation Date: 12/23/2025; Horse Status: Euthanized; 

Comments: Confirmatory testing for cohorts is pending.;