Oklahoma Horse Tests Positive for Equine Infectious Anemia A Coggins test determines if there are antibodies present in the horse's blood indicating the presence of EIA.

EIA Hold Order Lifted at Colorado Race Track

Arapahoe Park Racetrack

Colorado officials announced Tuesday they have released a hold order on the Arapahoe Park Racetrack.

The Equine Infectious Anemia (EIA) positive mare that prompted the restriction of movement at the Aurora-based facility was euthanized the day prior. A pony, also exposed and owned by the same person, was removed from the track to “a newly quarantined premises”, according to a released statement.

There are now no movement restrictions affecting horses at Arapahoe Park.

Officials say the affected horse was in Colorado less than 60 days. They say they believe it was infected prior to entering the state. It previously tested negative for EIA in May 2015.

EIA is a viral disease, also known as swamp fever. It attacks the horse’s immune system and is transmitted by biting insects – primarily horse and deer flies. It can also be transmitted through infected needles shared between horses.

Owners of horses at the track are being advised to voluntarily test their horses for EIA after August 27, 2016.

There is no cure or vaccine to prevent EIA.