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

San Joaquin County, CA

Outbreak Identifier: 5932

Alert ID: 3373

September 29, 2023

Confirmed Case(s) - No Quarantine

Source: California Department of Food & Agriculture

Number Confirmed: 1;
Number Suspected: Unknown;
Number Exposed: Unknown;
Age: 13; Gender: Gelding; Breed: Quarter Horse (QH); Onset of Clinical Signs: 9/13/2023;
Clinical Signs: lethargy, ataxia, muzzle fasciculations, fell when startled; Confirmation Date: 9/21/2023;
Comments: This is the 23rd case of equine WNV confirmed in CA in 2023. For more information, go to: https://www.cdfa.ca.gov/ahfss/Animal_Health/WNV_Info.html

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