MNDNR: extensive sampling of wild deer in 2019 shows CWD remains biggest concern in SEMN

Since we've been posting about CWD in Minnesota, we pass this press release from the Minnesota Department of Resource on to our readers, Extensive sampling of wild deer in 2019 shows that CWD remains biggest concern in southeastern Minnesota:

January 21, 2020

During the 2019 hunting season and special hunts, chronic wasting disease was confirmed in 27 wild deer, all from southeastern Minnesota.

CWD was not detected in wild deer in central and north-central Minnesota.

“Overall, this is good news for Minnesota’s wild deer. The disease is still relatively rare across the state, and the CWD-positive test results this year came from areas where we had the most risk,” said Lou Cornicelli, DNR wildlife research manager.

In total, 12,618 hunter-harvested deer were tested in the southeast disease management and control zones, 3,965 in the north-central disease management zone, and 536 in the central surveillance area.

An additional 282 opportunistic samples (deer found dead or reported sick) were tested, with one CWD-positive found within the southeast disease management zone. Researchers are still submitting some samples from cooperating taxidermists. Final results will be updated online at mndnr.gov/cwdcheck as they become available.

Minnesota’s CWD response plan calls for testing of wild deer for three years after the disease is detected in either captive or wild deer because the disease incubates in deer slowly. Before the DNR stops looking for the disease in an area, test results for three consecutive years must not detect CWD.

Southeastern area
In southeastern Minnesota, 23 additional cases of CWD were discovered in the disease management zone during the fall hunting season. Three additional deer were found positive for CWD after testing from the two special hunts in this area. The southeast control zone, a buffer area around the management zone, returned no CWD-positive results.

North-central area
This was the third year of sampling in the north-central area, after the discovery of CWD in a deer farm in Crow Wing County. More than 8,000 wild deer were tested during falls 2017 and 2018 without any detection of CWD; however, one CWD-positive deer was found dead near the infected farm in January 2019, which sparked more aggressive control strategies.

The management zone, deer permit area 604, will remain in place for at least two more years to see if CWD is found in other wild deer in the area.

“We’ll continue watching the north-central area to see if disease is present beyond the one CWD-positive deer discovered last year,” Cornicelli said.

Central area
Because no wild deer positives were detected in the central surveillance area in its third consecutive year of testing, there will be no more testing in this area during the 2020 hunting season. Precautionary testing in central Minnesota began in 2017 after the discovery of CWD at a deer farm in Meeker County.

Lots of help
To support hunter compliance with CWD management carcass movement restrictions, the DNR placed dumpsters for deer carcass collection and disposal in 25 locations across the disease management zones, as part of the Adopt-a-Dumpster program. The program kept more than 200 tons of deer remains off of the landscape, reducing the potential for spread of CWD through infected carcasses.

“The support and help from hunters, stakeholders, and businesses were critical in making this effort a success,” said Bryan Lueth, DNR habitat program manager, who helped coordinate the program. Backcountry Hunters and Anglers, Bluffland Whitetails Association, Crow Wing County and the Minnesota Deer Hunters Association provided support for the DNR’s Adopt-A-Dumpster program, which was established by the Minnesota Legislature.

Current management actions
In February, the DNR will work with U.S. Department of Agriculture-Wildlife Services to complete targeted culling in February in localized areas in the southeast where CWD has been detected in wild deer. Reducing deer densities in these areas reduces the risk of disease spreading. A map of the areas of focus is available on the southeast disease management zone webpage.

Venison from deer harvested that do not test positive for CWD will be donated through the Share the Harvest program. People can find more information about the program and how to sign up to receive venison on the DNR website.

Final CWD test results will influence how the DNR manages the disease going forward and any changes it will make to 2020 hunting regulations, will be released in August.

Current management actions
In February, the DNR will work with U.S. Department of Agriculture-Wildlife Services to complete targeted culling in February in localized areas in the southeast where CWD has been detected in wild deer. Reducing deer densities in these areas reduces the risk of disease spreading. A map of the areas of focus is available on the southeast disease management zone webpage.

Keeping Minnesota’s wild deer population healthy remains the goal in the DNR’s response to chronic wasting disease. The DNR’s three-pronged approach to prevent spread of the disease was detailed in an earlier news release; the department’s CWD response plan can be found on the DNR website.

For more information on chronic wasting disease, visit mndnr.gov/cwd.

Related posts:

• News item: Fillmore County Board gets CWD update; approves refugee resettlement
• Minnesota Deer Hunters Association supports DNR's captive deer movement emergency rule
• CWD news digest: #Mnleg agenda; Wisconsin confirms 105 recent CWD cases in captive deer
• MN DNR Report: Emergency Response to Disease Outbreaks in Wildlife; or, Chronic Wasting Disease activities & spending
• MN DNR emergency rule prohibits all movement of farmed white-tailed deer for next 30 days
• Douglas County deer farm investigation leads to discovery of Pine County captive doe CWD case
• Minnesota Chronic Wasting Disease test results update-- and a case of regulatory capture

Photo: A White-tail buck.

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