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West Nile Virus Control Program

Current Counties Positive for West Nile Virus and Jamestown Canyon Virus

Map shows WNV positive counties in red Map shows positive counties in yellow.
2023 West Nile Virus Activity by County 2023 Jamestown Canyon Virus Activity by County
Previous Years Surveillance Results PADOH Jamestown Canyon Virus Fact Sheet
Mosquito Testing Data For additional information regarding these data, please contact brocoder@pa.gov 

These static maps show 2023 positive West Nile Virus counties in red and 2023 positive Jamestown Canyon Virus counties in yellow.


Conservation district staff share West Nile information at an outdoor event table