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

Lanark County, ON

Outbreak Identifier: 6328

Alert ID: 3807

July 30, 2024

Confirmed Case(s) - No Quarantine

Source: OMAFRA

Number Confirmed: 1;
Number Exposed: Unknown;

Horse 1:
Gender: Mare; Breed: Quarter Horse (QH); Clinical Signs: This adult mare was euthanized due to progressive neurologic signs (ataxia). The owner reported a fever of 104F. The mare was positive on EEE IgM ELISA.; Vaccination Status: Undervaccinated;

Comments: To see present and previous 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;

Disease Alerts