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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.



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West Nile Virus
Lemhi County, ID
Outbreak Identifier: 4806
Alert ID: 2170
August 14, 2021
Confirmed Case(s) - No Quarantine

Idaho State Department of Agriculture

Number Confirmed: 1;
Number Exposed: 10;
Facility Type: Private Facility;
Age: 14; Gender: Mare; Breed: Quarter Horse Cross; Onset of Clinical Signs: 8/10/2021;
Clinical Signs: Difficulty Standing, Facial Paralysis, Neurologic Signs- Severe, Recumbent; Confirmation Date: 10/13/2021; Horse Status: Euthanized; Vaccination Status: Unvaccinated;
Notes: The horse was transported to referral hospital, unresponsive to supportive care and euthanized on request by owner 2 days after the onset of symptoms. For more information go to:  WNV factsheet
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