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Eastern Equine Encephalitis (EEE)

Eastern equine encephalitis cases in Ontario, September, 2021

Sep/04/2021

Author: Ontario Ministry of Agriculture and Food and Rural Affairs

Three cases of Eastern Equine Encephalitis have been reported in horses in the Parry Sound region of Ontario. The horses were unvaccinated. They showed neurologic disease and were euthanized. A...


Equine neurological cases are posted on the OMAFRA website at: OMAFRA


Information sheet on Eastern and Western Equine Encephalitis


Canadian Animal Health Surveillance System (CAHSS) - CURRENT EQUINE DISEASE OUTBREAK ALERTS

Why We Vaccinate - Eastern & Western Equine Encephalitis (“Sleeping Sickness”)


Burwash Equine Services .... Eastern Equine Encephalitis (EEE) and Western Equine Encephalitis (WEE) are both neurological diseases spread to horses and humans from infected wild birds and rodents via blood sucking mosquitos. Circulating levels of the virus in an affected horse are low, however, so it is highly unlikely that a horse would be a source of infection for a human. In horses, both EEE and WEE viruses can cause fever, depression, incoordination, staggering and blindness <more>

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Information about a new EEE case confirmed in ON can be found here: https://cahss.ca/cahss-tools/disease-alerts/eastern-equine-encephalitis-in-ontario-july-28-2023?l=en-us. Thank you OMAFRA for provid

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