SALEM, Ore. -- One horse in Oregon has tested positive for a contagious and potentially fatal virus linked to a cutting horse show in Ogden.
The Oregon Department of Agriculture said Wednesday that tests found the virus in a horse in Clackamas County that had close contact with horses that attended the Utah show.
The horses have been quarantined and so far have not shown any symptoms of the disease known as equine herpes virus.
Authorities have said that 18 Oregon horses were at the National Cutting Horse Association's Western National Championship held recently in Ogden, Utah.
The department says that the virus has also been confirmed in Washington, Idaho, California and Colorado.