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

Regional Municipality of York, ON

Outbreak Identifier: 6733

Alert ID: 4219

February 11, 2025

Confirmed Case(s) - Voluntary Quarantine

Source: OMAFA

Number Confirmed: 1;
Number Exposed: 3;

Horse 1:
Gender: Mare; Breed: Standardbred; Onset of Clinical Signs: 2/3/2025; Clinical Signs: This mare was transported to the farm from a dealer two weeks prior to showing signs. This mare and three other new horses were fortunately placed in a quarantine paddock. On Feb 3, this mare developed a mucopurolent nasal discharge and fever (39.5 C) and tested positive for S.equi.; Horse Status: Recovering;

Comments: The facility owner is working with their veterinarian on voluntary animal movement restrictions and biosecurity. 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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