ALERT–CURRENT EHV-1 SITUATION:
ORANGE COUNTY:
- January 19, 2012: One new confirmed case of the neuropathogenic strain of Equine Herpes Virus-1 has been confirmed on the Orange County affected premises. A total of 9 cases have been confirmed on this premises. On January 18, 2012, one of the positive horses which initially displayed a fever and limb edema became recumbent and the decision was made to euthanize this horse. Necropsy results as to the cause of the recumbency are pending. The facility remains under quarantine and all exposed horses are being monitored.
- January 18, 2012: Three new cases of neuropathogenic Equine Herpes Virus-1 (EHV-1) have been confirmed on the Orange County quarantined premises. There are a total of eight confirmed positive horses on the premises. At this point in time, only one of the eight cases has displayed neurologic signs. All exposed horses on the property are being monitored and enhanced biosecurity measures have been implemented. The source of the outbreak has not been identified. The initial epidemiologic investigation reveals no link to the three 2011 California neuropathogenic EHV-1 incidents.
- January 15, 2012: There are no new cases. Due to the holiday weekend and laboratory closure, the next posting on this website will be Tuesday, January 17, 2012.
- January 14, 2012: There are no new cases. CDFA continues to monitor the situation.
- January 13, 2012: Two additional horses displaying a fever have been confirmed for the neuropathogenic strain of Equine Herpes Virus-1. There are a total of five confirmed positive cases on the Orange County premises. All horses on the property continue to be monitored.
- January 12, 2012: Two additional horses displaying fever and respiratory signs have been confirmed positive for the neuropathogenic strain of Equine Herpes Virus- 1, on the Orange County premises. All horses on the premises remain under quarantine and being monitored for disease.
- January 11, 2012: A gelding displaying neurologic signs from an Orange County premises was confirmed positive for the neuropathogenic strain of Equine Herpes Virus-1. The gelding has been isolated, quarantined and is under veterinary care. The large multi-discipline facility has been quarantined with no movement of horses on or off the property. The potentially exposed horses on the premises are being monitored. A full epidemiologic investigation at the affected premises has been initiated by the CDFA Animal Health Branch.
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