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

Weber County, UT

Outbreak Identifier: 7007

Alert ID: 4524

August 26, 2025

Confirmed Case(s) - No Quarantine

Source: Utah Department of Agriculture and Food

Number Confirmed: 1;
Number Suspected: 1;
Number Exposed: 1;
Facility Type: Private Facility;

Horse 1:
Age: 15; Gender: Gelding; Onset of Clinical Signs: 8/14/2025; Clinical Signs: Initally off feed and no manure. No improvement over a few days and colic treatment. Hospitalized following hind end weakness and worsening condition. has gone down a few times while under treatment.; Horse Status: Recovering; Vaccination Status: Status Unknown;

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