University of Wisconsin–Madison

Milwaukee mosquito trap and test results 2018

This graph shows the changing risk of West Nile virus transmission each week based on the abundance of the mosquito that transmits the virus and the number of times the virus was detected in batches of mosquitoes.  Risk is higher than usual in Milwaukee for weeks mid-late August (weeks 33 and 34).

A mosquito gravid trap used for collecting the type of mosquito that transmits West Nile virus.

This map shows the locations of mosquito traps in Milwaukee.