Chronic wasting disease (CWD)
Chronic wasting disease is a fatal, infectious nervous system disease of deer, moose, elk and reindeer/caribou. It belongs to the family of diseases known as transmissible spongiform encephalopathies (TSEs) or prion diseases. CWD occurs only in members of the cervid or deer family -- both wild and captive. The Wisconsin DNR began monitoring the state's wild white-tailed deer population for CWD in 1999. The first positives were found in 2002.
Volunteer
CWD monitoring
Yearly Maps
- CWD sampling areas for 2020
- 2019 positive locations in Wisconsin and Illinois
- 2019 CWD positive locations in southern farmland zone
- 2019 CWD positive locations in central farmland and forest zone
- 2019 CWD positive locations in northern forest zone
Cumulative CWD Maps
- Statewide CWD positive locations
- Cumulative positive location in Wisconsin and Illinois
- CWD positive locations in southern farmland zone
- CWD positive locations in central farmland and forest zone
- CWD positive locations in northern forest zone
- CWD positive locations by year
- Interactive CWD mapping application
- CWD-affected county details