West Nile virus Activity in the CountyDownload the latest WNV map here.Previous WNV dataWNV Data for 2019WNV Data for 2018WNV Data for 2017WNV Data for 2016WNV Data for 2015
West Nile VirusWest Nile virus (WNV) is spread by the bite of an infected mosquito and is endemic to Orange County.