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