Source: CDFA
CALIFORNIA EHV-1 CAUSING EHM DISEASE UPDATE AS OF 3 PM 5/24/2011
California has no new confirmed cases of Equine Herpes Myeloencephalopathy (EHM) caused by EHV-1 since our May 23rd update.There continues to be 18 confirmed EHM cases in the state.
California Department of Food and Agriculture is working with animal Health officials in the western states to monitor the disease outbreak and investigate the source of the disease outbreak.
Disease reports in California continue to be limited to horses exhibited at the National Cutting Horse Association’s Western National Championships (NCHA) held at the Golden Spike Event Center in Ogden, Utah from April 30th to May 8, 2011 and the Kern County Cutting Event in Bakersfield, CA on May 13, 2011. CDFA has quarantined all infected horses and continues to advise that horses returning from those events and horses that have subsequently come into contact with returning horses avoid moving from their home premises until California has gone 14 days without a new case of EHM.
RECOMMENDATIONS FOR HORSE SHOW/EVENT MANAGERS
REGARDING EHV-1 BIOSECURITY PROCEDURES
(These biosecurity guidelines have been developed, based on currently available information, by CDFA veterinarians and the faculty at the School of Veterinary Medicine, University of California, Davis, CA, to minimize the risk of transmission of infectious diseases at public equestrian events. If the situation changes, these and other guidelines will be modified as appropriate.)
When the current EHV-1 outbreak began, horse owners were initially advised to avoid nonessential transport of their animals to reduce the risk of exposure to, or spread of the virus among, the horse population. Now that we have obtained more information through ongoing testing, reporting and monitoring, we have concluded that the EHV-1 infection outbreak is centered around horses that were present at the National Cutting Horse Association’s Western National Championships (NCHA) held at the Golden Spike Event Center in Ogden, Utah from April 30th to May 8th. and/or the Kern County Cutting Event in Bakersfield, CA on May 13th. This includes cutting horses that did not attend either of the above events but have subsequently come into contact with horses returning from those events.
Based on what is known today, we are suggesting that managers of horse shows or events occurring in California during the coming weeks incorporate the following biosecurity measures to minimize the risk for all participants:
For Additional Information:
Equine Herpes Myeloencephalopathy Brochure
CDFA Equine Herpes Myeloencephalopathy Fact Sheet
USDA Resources
American Association of Equine Practitioners Fact Sheet
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