EHV Exposes 56 Horses at California Boarding Stable

Horse Euthanized

California officials have quarantined a new Los Angeles County boarding stable. The action comes after a confirmed case of equine herpesvirus myeloencephalopathy (EHM) at the facility, which houses 56 horses.

A veterinarian euthanized a 12-year-old Quarter Horse mare at Whispering Willow, in Glendale, due to the severity of her neurologic signs. Tests confirmed the mare was positive for the wild-type strain, although officials say the horse is classified as a case of EHM.

EHM is most often due to the neuropathologic strain of EHV–1. Non-neurologic strains of the virus can also cause it, according to veterinarians.

A second horse also tested positive for the wild-type strain after presenting with a fever. The 32-year-old horse is isolated on-site.

The state quarantined the multi-discipline facility, which means no horses can go onto the property or leave.

Direct, horse-to-horse contact is a common route of transmission, but indirect transmission is also possible. It occurs when infectious materials are carried between infected and non-infected horses by people or inanimate objects such as buckets, tack, or trailers.

The source of infectious droplets is most often respiratory secretions.

Veterinarians recommend utilizing basic bio-security measures to help prevent the spread of the virus.

Stay with us as we continue to follow the latest from Los Angeles County.