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Horse suffering from West Nile Virus

Vaccination is the most effective way to prevent certain diseases. Vaccination helps to limit the spread of the virus and prevent serious physical and economic losses.


Note that during the summer of 2014, twenty horses died in the Alexandria, Ontario, as the result of infection with eastern equine encephalitis virus. Also, in 2015, twenty cases of Potomac disease were diagnosed in St-Lazare and its suburbs.


Base vaccines are recommended annually and others depend on the risk of exposure, age

and horse’s life style. I can advise you on the appropriate vaccination plan for your horse.


  • Rabies is still a deadly disease transmitted mainly by infected animals’ bite. 

  • Flu (equine influenza) virus is evolving and is highly contagious. 

  • Rhinopneumonitis (horse herpes) virus causes respiratory disorders and is the first cause of infectious abortion in mares.

  • Tetanus: a very serious disease, frequently fatal. Tetanus microbe is present throughout the horse’s environment and all wounds are likely to be contaminated.

  • Potomac is a serious illness caused by a bacteria carried by aquatic insects. It tends to be more common in certain geographic areas, often near rivers and lakes. Horses become infected by ingesting contaminated food or water by carrying insects. Bacteria multiplies in the horse’s intestinal tract and cause inflammation and colitis.

  • Encephalitis, a viral disease caused by an arbovirus. In Quebec, cases of EEE are generally observed between the months of May and October. Mosquitoes transmit the virus to horses.

  • West Nile virus is spread by the bite of an insect carrier of the virus taken from infected migratory birds.

horse vaccines, equine veterinerian, jacques morin, st-lazare, horse vet
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