West Nile virus Activity in the County2022 update map 12_31.pdf 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.