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

Los Angeles County, CA

Alert ID: 366

November 14, 2016

On November 14, 2016 one horse at the Los Angeles Equestrian Center (LAEC), displaying a fever yesterday and placed in quarantined isolation, has been confirmed positive for non-neuropathogenic EHV-1 today. Additionally, the two febrile horses which tested negative on November 10, 2016, were re-sampled yesterday and testing confirmed negative status. Currently, quarantined isolation is home to twelve (12) horses. To date, there have been seven confirmed cases of Equine Herpesvirus-1 Myeloencephalopthy (EHM), one of which was euthanized due to the severity of the disease. The remaining six neurologic cases are showing improvement and remain in isolation. Enhanced biosecurity measures are in place in all barns under quarantine and all horses’ temperatures are monitored twice daily. CDFA veterinarians, livestock inspectors and USDA animal health technicians continue to monitor the quarantine and incident situation on-site and will provide additional updates as they become available.

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