West Nile virus Activity in the CountyUpdated West Nile map WNV Data for 2022WNV Data for 2021WNV Data for 2020WNV Data for 2019WNV Data for 2018WNV Data for 2017WNV Data for 2016
West Nile VirusWest Nile virus (WNV) is spread by the bite of an infected mosquito and is endemic to Orange County.