Equine Herpes Myeloencephalopathy (EHM)

EHM is a contagious disease of the nervous system caused by an infection with a virus called equine herpesvirus-1 (EHV-1). There are two strains of the virus and both can cause EHM.


EHM is a contagious disease of the nervous system caused by an infection with a virus called equine herpesvirus-1 (EHV-1). There are two strains of the virus and both can cause EHM.

Ontario Animal Health Network EHM INFOGRAPHIC - Learn about prevention, risk, clinical signs, diagnosis, treatment, and reducing the spread of EHM.

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Equine Infectious Anemia (EIA)

On January 7, 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 th

Equine Influenza

Alberta Gelding Tests Positive for Equine Influenza (2021-01-04) Four additional horses at the same boarding facility were exposed. On Dec. 20, an attending veterinarian in Rocky View County, Alberta,

Strangles Disease

Report of Strangles Case – horse travelled from PEI On December 4, 2020 the Alcohol and Gaming Commission of Ontario (AGCO) was informed a Standardbred horse that had travelled from PEI with three oth

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