Wisconsin Department of Natural Resources

CWD Year 2020

Prevalence information: Prevalence is the proportion or percentage of a population that tests positive for a disease and in Wisconsin the CWD prevalence rate differs throughout the state. To learn more about prevalence of CWD in Wisconsin view the CWD prevalence page including the mapping tool at the bottom of the page.

This table shows available CWD test results for the selected year for each of DNR's four zones statewide. Results for an individual year are for the CWD year, which runs from April 1st through March 31st. For example, the results for the 2020 CWD year would be April 1st, 2020 through March 31st, 2021. Deer will not have full data until the datasheet is entered.

See data for all years

See the data for CWD Year: 

Note that the DNR data reported here only includes wild deer. For information on test results for Game Farm deer and elk, please contact the Wisconsin Department of Agriculture, Trade, and Consumer Protection (phone 608-224-4872, fax 608-224-4871).

DNR Zone # Sampled # Analyzed Positive for CWD
Northern Forest Zone 771 755 0
Central Forest Zone 179 169 3
Unknown Zone 472 34 1
Southern Farmland Zone 3642 2668 523
Central Farmland Zone 2341 2203 3

For questions or comments about
Chronic Wasting Disease,
send e-mail to: Wildlife Health