Alberta Horse Positive for EIA

The case is located in Vermilion River County.
A horse in Vermilion River County, Alberta, recently tested positive for EIA.
A horse in Vermilion River County, Alberta, recently tested positive for EIA. | Adobe Stock

On October 22, the Canadian Food Inspection Agency (CFIA) confirmed a positive case of equine infectious anemia (EIA) on a premises in Vermilion River County, Alberta. The horse has participated in rodeo activities. It was tested by an accredited veterinarian at the owner’s request to fulfill a U.S. export requirement. The veterinarian did not notice clinical signs of disease at the time of sampling. 

The CFIA is investigating the case to identify other exposed animals. Initial reports indicate there are other equines on the premises. 

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.

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