Powassan virus is a rare illness in Wisconsin. The first case of Powassan virus in Wisconsin was identified in 2003.
In 2020, Wisconsin had four cases of Powassan virus. There have been 42 probable and confirmed cases of Powassan virus in Wisconsin from 2003 through 2020.
Powassan virus is preventable.
Below are the statewide data for Powassan virus. For information on national data, visit the Centers for Disease Control and Prevention (CDC) Statistics and Maps page for Powassan virus.
Powassan virus data
Powassan virus cases in Wisconsin
Cases reported by month and age
Month of illness onset
Age group
Questions about illnesses spread by ticks? Contact us!
Phone: 608-267-9003 | Fax: 608-261-4976
Last Revised: June 15, 2022
