As of March 27, 2012, no new cases of Equine Herpes Virus-1 have been reported in the state of California. The two confirmed cases for the non-neuropathogenic strain of Equine Herpes Virus-1 in Monterey County showing mild neurological signs continue to be quarantined, isolated and housed under enhanced biosecurity protocols.
EVH-1 horse released from quarantine
Two confirmed cases for the non-neuropathogenic strain of Equine Herpes Virus-1 in California continue to be quarantined and isolated.
This strain of the EHV-1 virus is responsible for the more common respiratory infection, however a small percentage display neurologic signs and are classified as Equine Herpes Myeloencephalopathy (EHM) cases. EHM is a reportable condition in California. Both confirmed horses participated in the HITS Thermal Show March 5-11, 2012. CDFA continues to monitor the situation.
The confirmed positive case of the non-neuropathogenic strain of Equine Herpesvirus-1 (EHV-1) in a gelding in San Diego County has been released from quarantine. The hind limb ataxia continues to improve and the gelding has now twice tested negative for EHV-1.
As of March 23, 2012, one new case involving a horse on Monterey County premises displaying mild neurologic signs is confirmed positive for the non-neuropathogenic strain of Equine Herpes Virus-1. This strain of the virus is responsible for the more common respiratory infection, however a small percentage display neurologic signs and are classified as Equine Herpes Myeloencephalopathy (EHM) cases. EHM is a reportable condition in California.
To date, three horses displaying neurologic signs have been confirmed (two Monterey County and one San Diego County) for the non-neuropathogenic strain of EHV-1. All three confirmed horses participated in the HITS Thermal Horse Show March 5-11, 2012. The confirmed cases are quarantined, isolated and enhanced biosecurity protocols have been implemented. CDFA continues to monitor the situation.
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