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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Equine Infectious Anemia

Weld County, CO

Outbreak Identifier: 7315

Alert ID: 5024

June 02, 2026

Confirmed Case(s) - Official Quarantine

Source: State Veterinarian's Office

Number Confirmed: 1;
Number Exposed: 27;
Number Euthanized: 1;
Facility Type: Private Facility;

Horse 1:
Age: 10; Gender: Gelding; Breed: Quarter Horse (QH); Usage: Racing; Clinical Signs: Tested due to exposure to previous positive horse; Confirmation Date: 5/26/2026;

Comments: Horse had been exposed to previous EIA positive horse a year and a half ago; flagged suspect EIA positive on ELISA at CDA AHL on 5/20/2026;
Previous Alerts: 4977, 4861

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