Neuropathogenic equine herpes virus confirmed in Idaho horses
BOISE, Idaho — The Idaho State Department of Agriculture has received confirmation of equine herpesvirus myeloencephalopathy diagnosed in horses in Jerome, Gooding and Bannock counties for a total of three affected premises.
The three facilities are privately owned and now are under quarantine.
EHM is caused by a neuropathogenic strain of equine herpes virus infection and results in neurological symptoms.
One additional premises in Gem County also is under quarantine due to a confirmed EHV abortion in a pregnant mare.
An epidemiological investigation is under way for the four premises, but no connection between the operations is apparent. The EHV strain affecting the mare in Gem County was a non-neuropathogenic form, which is known to commonly cause respiratory disease as well as abortion in mares.
While the virus is highly contagious among horses it poses no health threat to humans.
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