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.

Disease

Outbreak States

Start Date

End Date

West Nile Virus

Norfolk County, ON

Outbreak Identifier: 6383

Alert ID: 3862

August 21, 2024

Confirmed Case(s) - No Quarantine

Source: OMAFRA

Number Confirmed: 1;
Number Exposed: Unknown;

Horse 1:
Age: 11; Gender: Mare; Breed: Standardbred; Usage: Pleasure Riding; Onset of Clinical Signs: 8/13/2024; Clinical Signs: This mare was examined for fever (104.5 F), muscle fasciculations, ataxia, knuckling, and unusual aggression. She was treated supportively but became recumbent on August 17 and was euthanized.; Horse Status: Euthanized; Vaccination Status: Unvaccinated;

Comments: To see past and present WNV cases in Ontario go to: https://www.oahn.ca/resources/ontario-equine-disease-alerts/ and enter the disease surveillance portal. To see past and present WNV cases in Canada, go to: https://cahss.ca/cahss-networks/equine and enter the equine dashboard.;

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