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Equine Herpesvirus Myeloencephalopathy (EHM) Outbreak
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Disease Alerts

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.



Laurentides, QC
Outbreak Identifier: 5994
Alert ID: 3435
October 21, 2023
Confirmed Case(s) - No Quarantine

MAPAQ

Number Confirmed: 1
Number Exposed: Unknown
Facility Type: Stable
Age: 10; Gender: Gelding; Breed: Quarter Horse (QH); Onset of Clinical Signs: 9/4/2023
Clinical Signs: Evolving: weight loss, localized sweat zones, altered mental state, muscular fasciculations at shoulder and neck, Horner syndrome left eye.; Confirmation Date: 10/19/2023; Horse Status: Recovering; Vaccination Status: Vaccinated