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.

Disease

Outbreak States

Start Date

End Date

Eastern Equine Encephalitis

United Counties of Leeds and Grenville, ON

Outbreak Identifier: 6560

Alert ID: 4031

October 08, 2024

Confirmed Case(s) - No Quarantine

Source: OMAFA

Number Confirmed: 1;
Number Exposed: Unknown;

Horse 1:
Gender: Mare; Breed: Pony; Onset of Clinical Signs: 9/15/2024; Clinical Signs: This pony mare started showing acute neurologic signs on September 15 (circling, head pressing, falling against the fence, stumbling, weakness, hypermetria). She was administered supportive treatment but was euthanized two days later as her clinical signs worsened.; Confirmation Date: 10/2/2024; Horse Status: Euthanized; Vaccination Status: Unvaccinated;

Comments: This is the 20th case of equine EEE in Ontario this year. To see past and present EEE cases in Ontario go to: https://www.oahn.ca/resources/ontario-equine-disease-alerts/ and enter the disease surveillance portal. To see past and present EEE cases in Canada, go to: https://cahss.ca/cahss-networks/equine and enter the equine dashboard.;

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