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

Peterborough County, ON

Outbreak Identifier: 5976

Alert ID: 3418

October 17, 2023

Confirmed Case(s) - No Quarantine

Source: OMAFRA

Number Confirmed: 1;
Number Exposed: Unknown;
Facility Type: Private Facility;
Age: 13; Gender: Mare; Breed: Quarter Horse (QH); Onset of Clinical Signs: 9/29/2023;
Clinical Signs: This mare was referred to an equine hospital with dull mentation and inappetence. She was difficult to move and began stumbling. She arrived at the hospital down in the trailer and was euthanized the following day.; Confirmation Date: 10/16/2023; Horse Status: Euthanized; Vaccination Status: Undervaccinated;
Comments: This was the 16th case of equine EEE in Ontario this year.;

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