The Los Angeles County Department of Public Health has identified the first case of human West Nile virus infection in L.A. County for the 2021 season. A resident of the South Bay area was hospitalized with WNV fever in late July and is recovering. Note: Long Beach and Pasadena are excluded as cases identified in those cities are reported by their local health departments. “We all have to take steps to prevent West Nile virus infections. Spread by mosquitoes, this virus is the leading cause of mosquito-borne disease in the continental United States. There are no vaccines to prevent or medi...