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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West Nile Virus

Middlesex County, ON

Outbreak Identifier: 6607

Alert ID: 4078

October 24, 2024

Confirmed Case(s) - No Quarantine

Source: OMAFA

Number Confirmed: 1;
Number Exposed: Unknown;

Horse 1:
Age: 4; Gender: Mare; Breed: Welsh Cross; Onset of Clinical Signs: 10/10/2024; Clinical Signs: This pony mare was referred to an equine hospital with acute neurologic signs (ataxia and front limb hypermetria), dullness, lethargy and muscle fasciculations. She received supportive treatment and is recovering.; Confirmation Date: 10/23/2024; Horse Status: Recovering; Vaccination Status: Undervaccinated;

Comments: This is the 11th equine case of WNV in Ontario this year. 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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