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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Equine Herpesvirus- Respiratory

Orange County, CA

Alert ID: 896

April 27, 2018

Source: California Department of Food and Agriculture

April 26, 2018 the California Department of Food and Agriculture confirmed Equine Herpesvirus (EHV-1) intwo horses, that had fevers and are from the previously quarantined barn at the Orange County Facility. The first positive horse displayed a fever on 4/23/2018 and was placed in onsite isolation stabling. The second positive horse that initially tested negative over the weekend was moved off site for isolation and quarantine. Enhanced biosecurity measures and twice daily temperature recording for all exposed horses in the quarantine barn continues. To date, there have been seven confirmed febrile cases of EHV-1 and the one index case of Equine Herpesvirus Myeloencephalopathy (EHM). Release of positive horses from quarantine isolation requires two negative tests seven days apart. CDFA staff continues onsite monitoring of the situation.

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