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

Malheur County, OR

Outbreak Identifier: 4892

Alert ID: 2241

September 15, 2021

Confirmed Case(s) - No Quarantine

Source: State Veterinarian’s Office

Number Confirmed: 1;
Number Suspected: 1;
Number Exposed: 7;
Facility Type: Private Facility;
Age: 2; Gender: Mare; Breed: Quarter Horse (QH); Onset of Clinical Signs: 9/8/2021;
Clinical Signs: Acute onset Ataxia, Facial sensitivity/reactivity; Confirmation Date: 9/15/2021; Horse Status: Recovering; Vaccination Status: Status Unknown;
Age: 3; Gender: Mare; Breed: Quarter Horse (QH); Onset of Clinical Signs: 9/7/2021;
Clinical Signs: lethargy, Staggering, Weakness; Confirmation Date: 9/15/2021; Horse Status: Recovering; Vaccination Status: Status Unknown

Notes: For more information go to: WNV factsheet

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