encephalitis

Las Vegas health officials are warning of a spike in the number of mosquitoes infected with St. Louis encephalitis, though no human cases have been…

Health officials in Las Vegas say mosquitoes infected with St. Louis encephalitis have been found in several Las Vegas areas, but no human cases have been…

West Nile virus has been diagnosed in a horse in Churchill County. The Nevada Department of Agriculture says it's the first such case involving a horse in…