A Coggins test screens horses’ blood for antibodies that are indicative of the presence of EIA. | Photo: Alexandra Beckstett/The Horse

The Equine Disease Communication Center (EDCC) reported Nov. 6 that Wyoming animal health officials have released all quarantines associated with potential equine infectious anemia (EIA) exposure in that state.

“The Wyoming Livestock Board, after completing the 60-day post exposure tests on 61 (equids) on 12 premises in eight counties, with all negative results, has released all quarantines associated with equine infectious anemia,” the EDCC said. “These quarantines were the result of exposure of the equines to a Colorado horse which was later discovered to be positive for the disease.”

In August, Colorado animal health officials said up to 240 horses across the country might have been exposed after a horse, later determined to be EIA-positive, traveled to Wyoming and back to Colorado. Before the positive EIA test came back, horses from the index case’s home premises were shipped to 20 states