The map below shows the approximate location for mosquitoes that have tested positive for disease within the year. All residents should take preventive measures to avoid mosquito bites and to prevent mosquito production around and in their homes, regardless of the location of positive mosquito samples. 

Positive Mosquito Samples have been confirmed.

Red points symbolize West Nile virus positive mosquito samples collected by the District.

Orange points symbolize St. Louis Encephalitis positive mosquito samples collected by the District.

Updated on October 13th, 2021.

Click here to view the 2020 disease monitoring map.

Click here to explore the 2021 WNV / SLEV Mosquito Sample Dashboard.