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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.



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Weld County, CO
Outbreak Identifier: 7338
Alert ID: 4885
February 19, 2026
Confirmed Case(s) - Official Quarantine

State Veterinarian's Office

Number Confirmed: 1; 
Number Exposed: 2; 
Facility Type: Private Facility; 

Horse 1: 
Age: 7; Gender: Mare; Breed: Quarter Horse (QH); Usage: Racing; Clinical Signs: Tested due to exposure to initial Adams County, CO case in December.; Confirmation Date: 2/17/2026; Horse Status: Affected And Alive;