CHEYENNE - A horse in Campbell County is the first Wyoming animal confirmed with the West Nile virus this year, according to the Wyoming Department of Health.
Thirty-eight birds and 18 horses have been tested for the mosquito-borne virus at the Wyoming State Veterinary Laboratory this year.
The horse case was confirmed Friday. As of Monday, no humans in Wyoming had been confirmed with West Nile this year.
"It's still to early to tell what kind of season we will have for West Nile virus," said Terry Creekmore, the state's West Nile surveillance coordinator. "Transmission of the virus by mosquitoes is highly dependent on a number of factors, including weather and effectiveness of local mosquito control programs."
Last year, 12 people tested positive for West Nile in Wyoming, and two died. Also last year, the state tested 102 horses and 148 dead birds for West Nile; the first horse tested positive on June 10, followed by the first bird June 23.