Deadly equine virus hits Washington
       Horses, alpacas and llamas at risk of disease
Three cases of a virulent strain of the equine herpes virus have been  reported in Washington state, prompting horse owners to take  precautions against spread of the disease.
The Spokane Lilac  Association reported Thursday that seven of its 15 equestrian entries in  Saturday’s Armed Forces Torchlight Parade have canceled as  a precaution.
 Some of the area’s horses were exposed at recent  competitions in Ogden, Utah, and Clarkston, Wash., said Mike Dedmon,  vice president of parades for the Lilac Association.
“I’d rather stop the spread than have them coming here,” he said.
One of the Washington cases occurred at the Washington State University Veterinary Teaching Hospital.
That  horse was admitted to the hospital for unrelated problems, but the  virus was later detected. The horse had competed at the National Cutting  Horse Association Western National Championships in Ogden about two  weeks ago.
In a recent letter, state veterinarian Leonard Eldridge  said the infection was a variant of the Equine Herpes Virus (EHV-1)  known to cause extreme neurological complications and death. 
Voluntary quarantines, veterinarian monitoring and other precautions are recommended for horses that were exposed, he said.
Confirmed cases must be reported to the state veterinarian’s office at (360) 902-1881.
“This is a reportable disease,” said Charlie Powell, public information officer for the WSU College of Veterinary Medicine.
The  WSU veterinary hospital has been under a voluntary quarantine, not  accepting any new equine or camelid patients except in dire emergencies.  Camelids include alpacas and llamas.
“This virus is so  contagious,” Powell said. It spreads through sneezing, whinnying and  other contact. The virus can survive on tack gear or even shovels to  infect other horses.
Its incubation period is two to 14 days.
Powell recommended that horse owners limit their animals’ travel for the next few weeks so the outbreak can be stemmed.
Humans, livestock and pets are not at risk, Powell said. 
In  Colbert, the McKinlay & Peters Equine Hospital treated a horse that  had symptoms of the disease, but that horse was sent home for  quarantine and the hospital is under quarantine and taking precautions.
The  horse had been at one of the competitions to which the virus was  traced, a spokeswoman there said. The hospital was awaiting results of a  lab test to determine if the horse was infected.
Lilac Parade  officials are taking steps to protect horses during the parade. A  veterinarian will be on hand. Equestrian entries will be spaced at least  50 feet apart in staging areas. 
Dedmon, in a letter to equestrian entrants, asked that horses that attended the Ogden event stay home. 
In the Spokane area, stable owners are taking steps to halt the spread of the disease.
At  Valley Chapel Farms south of Spokane, owner Lisa Talbott notified horse  owners that the facility was closed to incoming horses and asked that  horses at the farm be kept there for the next two weeks as a precaution.
She  said she is not concerned about the virus spreading there because “we  are more of a recreational facility” rather than a stable for  competitive horses.
However, she noted in an email that almost all  horse events have been canceled for the time being and many stables  have been “locked down.”
The Kitsap Sun reported that equestrian entries were pulling out of Bremerton’s Armed Forces Day Parade on Saturday. 
One of the confirmed Washington cases was reported in Snohomish County.
The  neurological strain of EHV-1 was first identified in 1971. Treatment is  available, but may not always be effective, Powell said.
For more  information, the U.S. Department of Agriculture has a guide to  understanding the neurological form of EHV infection. Also,  visit www.vetmed.wsu.edu/.