Equine Infectious Anemia (EIA)

Equine neurologic disease case due to Equine Herpesvirus 1, Ontario, September, 2021 Sep/23/2021 Author: Ontario Ministry of Agriculture and Food and Rural Affairs The Ontario Ministry of Agriculture and Food and Rural Affairs (OMAFRA) was notified on September 23, 2021 regarding a positive test result for EHV-1 from a mare that was euthanized on September 20...

Equine infectious anemia case in Alberta, September 17, 2021 Sep/17/2021 Author: Canadian Food Inspection Agency On September 17, 2021, positive equine infectious anemia (EIA) results were confirmed by the Canadian Food Inspection Agency’s (CFIA) national reference laboratory for a horse located on a premises in...


More information can be found on the Canadian Animal Health Surveillance System (CAHSS) Equine Diseases Dashboard or through the Disease Alerts Tool.


For more information on EIA go to https://aaep.org/sites/default/files/Documents/Outside%20Linked%20Documents/DiseaseFactsheet_EIA%20Cobranded.pdf;


More information can be found on the Canadian Animal Health Surveillance System (CAHSS) Equine Diseases Dashboard or through the Disease Alerts Tool.


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EIA, also known as “swamp fever,” is a viral disease of horses and other equids (i.e. donkeys, mules, and zebras) that causes recurrent episodes of fever, lethargy and destruction of red blood cells (anemia) and platelets (thrombocytopenia).


Most EIA-infected horses show no clinical signs of disease; however, they remain carriers of the virus for life and can be a source of infection for susceptible animals.


In Canada, EIA is listed as a reportable disease under the Health of Animals Act. Accordingly, when EIA is suspected, it must be reported to the Canadian Food Inspection Agency (CFIA).

With neither cure nor vaccine in existence, veterinarians and ­researchers must supervise the equine infectious anemia virus ­closely to avoid widespread disease

Canadian Food Inspection Agency

Canadian Animal Health Surveillance System (CAHSS)

Alberta Veterinary Medical Association 

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