The California Department of Public Health (CDPH) announced Friday the first confirmed death in California due to West Nile virus (WNV). The death occurred in San Luis Obispo County.
West Nile virus is transmitted to humans and animals by the bite of an infected mosquito. As of July 9, WNV has been detected in 45 dead birds from 6 counties and 177 mosquito samples from 13 counties. Hot temperatures this month are contributing to increasing numbers of mosquitoes and the increased risk of virus transmission to humans. So far this season, activity is within expected levels. The risk of disease due to WNV usually increases at this time of year and is highest throughout the summer and early fall.
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