EIA Confirmed in British Columbia Horse

The horse lives in Thompson-Nicola Subdivision B.
One horse in Thompson-Nicola Subdivision B, British Columbia, is positive for equine infectious anemia (EIA).
One horse in Thompson-Nicola Subdivision B, British Columbia, is positive for equine infectious anemia (EIA). | Wikimedia Commons

On December 1, positive equine infectious anemia (EIA) results were confirmed by the Canadian Food Inspection Agency for one horse located in Thompson-Nicola Subdivision B, British Columbia. The horse was not displaying clinical signs at the time of sampling. Several additional equines reside at the premises, and movement controls have been implemented for all horses on the property. 

EDCC Health Watch is an Equine Network marketing program that utilizes information from the Equine Disease Communication Center (EDCC) to create and disseminate verified equine disease reports. The EDCC is an independent nonprofit organization that is supported by industry donations in order to provide open access to infectious disease information.

About 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 an uninfected animal, often by blood-feeding insects such as horseflies. It can also be transmitted through the use of blood-contaminated instruments or needles.

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 to travel across state lines.

Once an animal is infected with EIA, it is infected for life and can be a reservoir for the spread of disease. Not all horses show signs of disease, but those that do can exhibit:

  • Progressive body condition loss;
  • Muscle weakness;
  • Poor stamina;
  • Fever;
  • Depression; and
  • Anemia.

EIA has no vaccine and no cure. A horse diagnosed with the disease dies, is euthanized, or must be placed under extremely strict quarantine conditions (at least 200 yards away from unaffected equids) for the rest of his life.

Brought to you by Boehringer Ingelheim, The Art of the Horse
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