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

Grey County, ON

Outbreak Identifier: 6906

Alert ID: 4419

July 02, 2025

Confirmed Case(s) - Voluntary Quarantine

Source: OMAFA

Number Confirmed: 1;
Number Exposed: 2;
Facility Type: Private Facility;

Horse 1:
Age: 12; Gender: Gelding; Breed: Paint; Onset of Clinical Signs: 6/23/2025; Clinical Signs: This gelding developed classic signs of Strangles two weeks after being purchased from someone who buys and sells horses as their occupation. The horse also stopped over at a sales barn in the Regional Municipality of Waterloo for 48 hours prior to arriving at its new location. Testing was positive for S. equi by PCR.;

Comments: The farm owner, working with their veterinarian, has instituted 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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