Outbreaks | Equine Disease Communication Center

Updates on current disease outbreaks are listed here as they occur and will include the date listed, disease name, location and current status. Specific premises will not be named but the general location by town, county and state will be listed. When locations, events or horses are at risk they will be listed. Updates will be posted as they are received.

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Eastern Equine Encephalitis

Lanark County, ON

Outbreak Identifier: 5776

Alert ID: 3212

August 22, 2023

Confirmed Case(s) - No Quarantine

Source: OMAFRA

Number Confirmed: 1;
Number Suspected: 1;
Number Exposed: Unknown;
Age: 14; Gender: Mare; Breed: Hackney Pony; Onset of Clinical Signs: 8/5/2023;
Clinical Signs: The mare developed neurologic signs (severe ataxia, asymmetrical hyperesthesia, weakness, poor tongue tone) on August 5. She was treated with NSAIDS then corticosteroids and has recovered. A foal on the property also showed neurologic signs for 48 hours and has also recovered.; Confirmation Date: 8/22/2023; Horse Status: Recovering; Vaccination Status: Unvaccinated;

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