WEST NILE VIRUS ACTIVITY MAP

2021 West Nile Virus Activity MAP

Below is a map of confirmed positive samples of West Nile virus activity in Sacramento and Yolo counties to date. For a list view of this data, please see the West Nile Virus Activity page.

The map is being upgraded, details when clicking on markers will be added soon.

Markers are color coded by type:

  • Blue: Dead Bird
  • Green: Mosquito Samples
  • Red: Sentinel Animal

Locations on map are randomized within 500 feet of true locations.