The Arkansas Health Department says it has found human cases of West Nile virus in the state. The human cases were reported in Union and Izard counties. The cases are the first this season in Arkansas. The department did not say how severe the cases were or how the patients are doing. West Nile virus has been found in birds in Arkansas, Benton, Franklin, Johnson, Independence, Logan, Mississippi, Ouachita, Polk, Sebastian and Washington counties. The virus is spread by mosquitoes. The Health Department advises people to stay inside when mosquitoes are most active, from dusk to dawn. When it is necessary to be outside, the department advises wearing protective clothing and using mosquito repellent that contains DEET.