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

Middlesex County, ON

Outbreak Identifier: 6922

Alert ID: 4436

July 23, 2025

Confirmed Case(s) - Voluntary Quarantine

Source: OMAFA

Number Confirmed: 1;
Number Exposed: 20;
Facility Type: Boarding Facility;

Horse 1:
Age: 7; Gender: Gelding; Breed: Pony; Clinical Signs: The pony was examined for choke and was noted to have copious mucopurulent nasal discharge that tested positive for S. equi.;

Comments: The facility 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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