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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Strangles

Brant County, ON

Outbreak Identifier: 7820

Alert ID: 5395

October 28, 2026

Confirmed Case(s) - Voluntary Quarantine

Source: Ontario Ministry of Agriculture, Food, and Agribusiness

Number Confirmed: 1;
Number Suspected: Unknown;
Number Exposed: Unknown;
Facility Type: Boarding Facility;

Horse 1:
Age: 7; Gender: Mare; Breed: Pony; Onset of Clinical Signs: 10/22/2026; Clinical Signs: This mare developed dysphagia (difficulty swallowing), had a fever and swollen lymph nodes of the head. A nasal swab was positive for S. equi by PCR.; Confirmation Date: 10/24/2026; Horse Status: Recovering; Vaccination Status: Unvaccinated;

Comments: The facility owner, working with their veterinarian, has implemented voluntary animal movement restrictions and biosecurity protocols. To see past and present Strangles cases in Ontario go to: https://www.oahn.ca/resources/ontario-equine-disease-alerts/ and enter the disease surveillance portal.;;

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