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Disease Alerts

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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San Mateo County, CA
Alert ID: 1132
November 20, 2018

California Department of Food and Agriculture

On November 21, 2018, the California Department of Food and Agriculture released the quarantine on the horse in San Mateo County following two negative EHV-1 tests. No additional cases were detected and the quarantine has also been released on all exposed horses. There are currently no EHV-1 quarantines in California.