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

Wyoming animal health officials have placed additional facilities under quarantine after determining that horses residing there were exposed to a horse that ultimately tested positive for equine infectious anemia (EIA), the Equine Disease Communication Center (EDCC) reported Sept. 1.

“The Wyoming Livestock Board has quarantined an additional seven premises, totaling nine now, as a result of equine being exposed to a horse originating in Colorado which was found to be positive for equine infectious anemia,” the EDCC said. “Counties include Sweetwater, Lincoln, Teton, Park, and Fremont.”

The EDCC said 41 horses were exposed at a Sweetwater County premises where the index case was sent illegally from Colorado

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