An 8-year-old horse from Grand Traverse County tested positive for the mosquito-borne virus this month, as did a small turkey flock.
A horse in Franklin County, Wash., is the first in the state this year to be diagnosed with West Nile virus.
The FFA horse show at the Oregon State Fairgrounds has been cancelled, as organizers worry about the footing in the horse stadium.
Affected horses experience infections called photodermatitis, which can result in hair loss and painful lesions. The source appears to be tainted alfalfa hay from several distributors, with at least some from the Bishop area in the Eastern Sierra, according to the California Department of Food and..