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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Vesicular Stomatitis

Riverside County, CA

Outbreak Identifier: 5616

Alert ID: 3025

May 22, 2023

Confirmed Case(s) - Official Quarantine

Source: California Department of Food and Agriculture

Number Confirmed: 2;
Number Suspected: 2;
Number Exposed: Unknown;
Comments: Since the last situation report (5/17/2023), there have been 15 new VSV-affected equine premises identified (4 confirmed positive, 11 suspect) in California. One new county (Riverside County) has become a confirmed VSV-positive county. To date, all confirmed cases have been vesicular stomatitis New Jersey virus (VSNJV) serotype. County-level distribution of new cases is as follows: California • Riverside County (New Infected County) – 2 confirmed positive, 2 suspect premises (all equine) • San Diego County – 2 new confirmed positive, 9 new suspect premises (all equine) For more information, go to: https://www.aphis.usda.gov/aphis/ourfocus/animalhealth/animal-disease-information/equine/vsv/vesicular-stomatitis

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