Three New Positive EHM Horses In Idaho

Two of three mares affected with EHV-1 in Bannock County, Idaho, were euthanized.
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Idaho Bannock County map

Two of three mares affected with EHV-1 in Bannock County, Idaho, were euthanized.

The Idaho State Department of Agriculture has confirmed three cases of equine herpesvirus myeloencephalopathy in Bannock County. Three Quarter Horse mares showed an onset of clinical signs, including fever, ataxia and neurological symptoms. All three affected mares were confirmed positive for the neuropathogenic strain of EHV-1. Two of the affected mares were euthanized. 

The premises is under quarantine and strict biosecurity is being followed. The epidemiological investigation is ongoing. 

This is the fourth premises to be quarantined in Idaho due to EHV-1 in 2018.

The Equine Disease Communication Center (EDCC) works to protect horses and the horse industry from the threat of infectious diseases in North America. The communication system is designed to seek and report real time information about disease outbreaks similar to how the Centers for Disease Control and Prevention (CDC) alerts the human population about diseases in people.