West Nile Virus Activity in the County - Orange County Mosquito and Vector Control District

West Nile Virus Activity in the County

Map of West Nile Virus activity in Orange County, July 21, 2025. 4 positive mosquito samples, 1 positive dead bird, 0 human infections.

WNV Data for 2024 WNV Data for 2023

May contain: confectionery, sweets, and food

West Nile Virus

West Nile virus (WNV) is spread by the bite of an infected mosquito and is endemic to Orange County.

May contain: urban, neighborhood, building, nature, outdoors, landscape, scenery, road, suburb, and aerial view

Residential truck-mounted applications

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