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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Equine Influenza

Regional Municipality of Niagara, ON

Outbreak Identifier: 6864

Alert ID: 4368

May 16, 2025

Confirmed Case(s) - Voluntary Quarantine

Source: OMAFA

Number Confirmed: 2;
Number Suspected: Unknown;
Number Exposed: Unknown;
Facility Type: Boarding Facility;

Horse 1:
Age: 10; Gender: Mare; Breed: Quarter Horse (QH); Usage: Barrel Racing; Clinical Signs: Two horses from the farm competed at an event in the Hamilton Region from May 2-4 and developed respiratory signs after returning home. They both tested positive for equine influenza virus.; Horse Status: Recovering; Vaccination Status: Unvaccinated;

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