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

Inyo County, CA

Alert ID: 384

December 05, 2016

A different strain of EHV-1 causing EHM has been confirmed in one horse with mild neurologic symptoms in Inyo County, CA. Although no additional EHM cases have been confirmed on this premises, we are still awaiting confirmatory testing on two febrile horses that have been isolated. This is the neurologic strain, which is biologically distinct from the non-neurologic strain identified in all the LA County confirmed cases. The affected horse, a 20 year-old QH gelding, is part of a wintering pack string of twenty-eight (28) horses and four (4) mules on an isolated, high desert ranch. These horses/mules have been placed under quarantine with no movement allowed in order to limit disease transmission. The investigation of this disease outbreak is continuing by CDFA staff. Updates will continue on a 48 hour basis.

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