Chronic wasting disease remains a serious and persistent threat to Minnesota’s deer herd health, but sampling efforts revealed some good news – three consecutive years of disease surveillance in deer permit areas 157, 159, 213, 225 and 273 yielded no detections of the disease in wild deer. Consistent with the DNR’s CWD management plan, these zones were established due to the detection of CWD in captive deer facilities. Following these three consecutive years of no detections in wild deer, successful hunters in these DPAs will no longer need to submit samples for testing.
“This is great news for deer and deer hunters,” said Erik Hildebrand, wildlife health program supervisor. “We greatly appreciate hunters’ help monitoring these areas over the past few years.”
CWD was detected in 26 hunter-harvested deer through the 2022 fall seasons. Of these, 73% were from the southeast, a region that continues to see persistent CWD infections in wild deer.
CWD was detected in two hunter-harvested bucks in DPA 184 in the Bemidji area. DPA 184 is part of a CWD surveillance zone established due to the detection of CWD in a captive deer facility and illegal dumping of infected captive deer carcasses on public land. After the discovery of this fall’s CWD detections in wild deer, the DNR held a late disease management hunt to learn more about the presence of CWD in the area. An additional 102 deer were harvested by hunters, with no additional CWD detected.
These results, along with the fact the two deer in which CWD was detected were both bucks, led to the DNR’s decision to not conduct targeted agency culling in DPA 184 this winter.
“We use targeted culling in areas within two miles of a known CWD detection in deer, particularly does,” Hildebrand said. “We know an adult doe has a smaller home range and a tight social group. If a doe has CWD, the likelihood that her social group also has it is high. When we find a doe with CWD, that serves as anchor point for our culling efforts — we can apply it to very small, specific areas to fight the disease.”
Conversely, bucks have larger home ranges and detecting CWD in two bucks does not allow the DNR to establish an effective anchor point for a culling effort.
Culling efforts in the southeast started Jan. 23 and will continue through late March. Targeted culling will take place in the city of Grand Rapids (part of DPA 679) and the south metro (DPA 605) from Feb. 27 to March 10, focusing on locations where CWD has been detected in the past. All deer culled are processed and the venison is frozen until test results are received. Venison from deer with a not-detected result is distributed to cooperating landowners and those signed up through DNR’s Share the Harvest program (mndnr.gov/cwd/share-harvest.html).
Hunters and conservation partners are critical in helping control CWD and maintaining the health of Minnesota’s deer herd. The DNR would like to thank deer hunters, taxidermists, processors, tribal nations (Leech Lake, Red Lake and White Earth), and deer conservation partners (Minnesota Conservation Federation, Minnesota Deer Hunters Association, Bluffland Whitetails and Backcountry Hunters & Anglers) that helped collect or submit samples for testing.
For more information about deer hunting in Minnesota, visit the DNR deer hunting page (mndnr.gov/hunting/deer). CWD information, test results and more can be found at the DNR CWD page (mndnr.gov/cwd).