Neurologic Equine Herpesvirus

The California Department of Food and Agriculture continues to monitor a neurologic equine herpesvirus outbreak that started at a Sonoma County show grounds.

The Idaho State Department of Agriculture reported a confirmed case of neurologic equine herpesvirus in Owyhee County.

One horse has been euthanized due to neurologic equine herpesvirus with others in quarantine after being exposed at a Sonomoa County showgrounds.

Two horses were confirmed with neurologic equine herpesvirus in Wheatland County, Alberta, Canada, with 10 being suspected of having disease and 20 horses exposed.

Two Massachusetts horses were confirmed with neurologic equine herpesvirus—and six others were suspected of having the disease—at boarding facilities in Middlesex and Plymouth Counties.

Two horses on a premises in Morris County, New Jersey, tested positive for neurologic equine herpesvirus (also known as equine herpesvirus myeloencephalopathy or EHM).

A case of neurologic equine herpesvirus was confirmed in Grand Isle County, Vermont.

Episode 53 of the Disease Du Jour podcast brings you some basics and research updates on equine herpesvirus from Dr. Gisela Hussey.

These are the fifth and sixth reported cases of neurologic equine herpesvirus in Ontario this year.

An aged Quarter Horse mare was confirmed positive for neurologic herpesvirus in Santa Clara County, California.

More horses at Laurel Park Racetrack in Maryland have tested positive for EHV-1, one of which was euthanized due to neurologic signs.

A neurologic warmblood mare in Sonoma County, California, tested positive for equine herpesvirus with 40 horses exposed.

A private facility had two horses confirmed with neurologic equine herpesvirus and 22 others exposed.

Testing continues to take place to identify any additional horses that test positive for equine herpesvirus at facilities in Kentucky.

A horse in Davis County, Utah, has been euthanized due to neurologic equine herpesvirus; two other horses are suspected of having the virus and 100 other horses have been exposed.

Additional Kentucky horses test positive for the neuropathogenic strain of equine herpesvirus; index case from Woodford County was euthanized.

One neurologic horse competed at Old Salem Farm on March 5 prior to exhibiting clinical signs.

A 3-year-old Thoroughbred filly in Woodford County, Kentucky, has tested positive for the neuropathogenic strain of EHV-1.

Unrelated horses in Anne Arundel and Cecil Counties in Maryland were confirmed with neurologic equine herpesvirus.

The Florida Department of Agriculture and Consumer Services reported a second horse was EHV-1 positive—but not showing neurologic signs—at the index facility in Marion County where there was a positive neurologic equine herpesvirus case earlier this month.

The Kentucky State Veterinarian's office is being proactive in disseminating information and offering assistance to facility and equine event managers to stave off spread of neurologic equine herpesvirus.

A Warmblood mare was confirmed with neurologic equine herpesvirus at a boarding facility in Marion County, Florida.

A horse boarding facility in Los Angeles County has had no more cases in 14 days so the EHM quarantine was released.

The Regional Municipality of Peel and the Regional Municipality of Niagara in Ontario, Canada, reported cases of neurologic equine herpesvirus.