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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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Equine Infectious Anemia
Colorado, United States
Alert ID: 230
June 24, 2016
On June 23, 2016, the Colorado Department of Agriculture, State Veterinarian’s Office, was notified by the USDA National Veterinary Services Laboratory (NVSL) that a non-racing horse presently located at Arapahoe Park in Aurora, CO tested positive for Equine Infectious Anemia (EIA). Confirmatory tests are currently being run. Arapahoe Park is currently under a hold order that restricts movement of horses until an initial investigation is completed by the Colorado Department of Agriculture (CDA). The affected horse has been in Colorado less than 60 days and came from an out-of-state track. It appears that the horse was infected prior to coming to Colorado and previously tested negative for the disease in May of 2015. Because the disease is most commonly spread by biting flies and it is very early in Colorado’s fly season, the risk of disease transmission to other horses at the track appears to be relatively low.
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