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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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Riverside County, CA
Outbreak Identifier: 5929
Alert ID: 3370
September 29, 2023
Confirmed Case(s) - No Quarantine

California Department of Food & Agriculture

Number Confirmed: 1; 
Number Exposed: 50; 
Age: 2; Gender: Colt; Breed: Quarter Horse (QH); 
Clinical Signs: sudden hind-end ataxia; Confirmation Date: 9/26/2023; Horse Status: Euthanized; Vaccination Status: Vaccinated;
Comments: This is the 26th 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