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EIA in Iowa: Four Cases Reported in Polk County

April 9, 2019
Posted by Erica Larson

The Equine Disease Communication Center reported April 8 that four Quarter Horses from Polk County, Iowa, have tested positive for EIA.

Topics: Diseases and Conditions, Equine Infectious Anemia (Swamp Fever, EIA), Neurologic Disease

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

The Equine Disease Communication Center reported April 8 that four Quarter Horses from Polk County, Iowa, have tested positive for equine infectious anemia (EIA).

Equine infectious anemia is a viral disease that attacks horses’ immune systems. The virus is transmitted through the exchange of body fluids from an infected to a uninfected animal, often by blood-feeding insects such as horseflies. It can also be transmitted through the use of blood-contaminated instruments or needles.

A Coggins test screens horses’ blood for antibodies that are indicative of the presence of the EIA virus. Most U.S. states require horses to have proof of a negative Coggins test in order to travel

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Written by:

Erica Larson

Erica Larson, former news editor for The Horse, holds a degree in journalism with an external specialty in equine science from Michigan State University in East Lansing. A Massachusetts native, she grew up in the saddle and has dabbled in a variety of disciplines including foxhunting, saddle seat, and mounted games. Currently, Erica competes in eventing with her OTTB, Dorado.