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Preliminary test shows chronic wasting disease in a deer harvested in southeast Minnesota

by , Posted to on 01/21/2011 12:25 PM | "Quote" | "Quick Reply" |

Joined: 07/22/2005
Location: ND
Preliminary test shows chronic wasting disease in a deer harvested in southeast Minnesota
UPDATE: The Minnesota Board of Animal Health has established a 10-mile radius CWD-endemic area in southeastern Minnesota near where the deer was shot.
By: News Tribune staff, Duluth News Tribune 

 A preliminary screening test strongly indicates that a deer harvested by a hunter last November near Pine Island in southeast Minnesota had chronic wasting disease, according to the Minnesota Department of Natural Resources. CWD is fatal to deer, elk and moose but not known to affect human health.

If the National Veterinary Services Laboratory in Ames, Iowa, confirms the University of Minnesota’s preliminary diagnosis, it would mark the first time CWD has been found in Minnesota’s wild deer herd. An official confirmation is expected by next week.

“This is very unfortunate,” said Tom Landwehr, DNR commissioner said in a statement. “Minnesotans have done much to prevent CWD from entering our wild deer population. The good news is that we are well prepared for an attempt to control the disease and to possibly eliminate it.”

Last fall, a game farm deer in Ashland was thought to have CWD after preliminary testing, but further testing showed the animal did not have the disease.

The Minnesota DNR has begun implementing the state’s CWD response plan. In the weeks ahead, the DNR will take steps to learn more about how prevalent the disease is in the area and will take actions based on that information.

The deer presumed to have CWD was taken by a hunter this past fall about three miles southwest of Pine Island in Olmsted County. The hunter allowed the DNR to take a lymph-node sample from the deer when he registered it. Recent microscopic analysis of that sample strongly indicates that the animal had CWD. The hunter has been informed of the results. It is not known how the deer contracted the disease.

Lou Cornicelli, DNR big game coordinator, will lead the agency’s CWD response team. He said the critical first step is to conduct an aerial survey to determine the number and distribution of deer in the Pine Island area. Because this area of the state is almost entirely in private ownership, the second step will be to talk with landowners in the area to seek their cooperation in collecting additional samples and to identify where additional samples can be collected.

Sample collection could take the form of a late-winter deer hunt, landowner shooting permits, or sharpshooting in conjunction with cooperating landowners who provide permission. The purpose of the sampling is to collect needed additional CWD samples to assess disease distribution, and also to reduce the potential for the disease to spread.

Michelle Carstensen, the DNR’s wildlife health program leader, said the prevalence of CWD probably is low.

“We sampled 524 deer this past hunting season in the Pine Island area and found only one that appears to have CWD,” Carstensen said. She added that the DNR did not find CWD in a total of 2,685 samples taken throughout southeastern Minnesota in 2009 or 500 samples taken in 2008 along the Wisconsin border, from Houston County northward to St. Croix State Park in Pine County.

The DNR has been on the lookout for CWD since 2002, when it was first detected at a domestic elk farm in central Minnesota. In recent years it has put additional focus on southeastern Minnesota. That’s because the disease was detected in 2008 at a domestic elk farm near Pine Island, and because southeastern Minnesota abuts Wisconsin, which has had CWD for many years. The domestic elk herd at Pine Island was eliminated after a 7-year-old female was found to have CWD. Three other elk were found to have CWD during the removal effort.

Though it is not known exactly how CWD is transmitted, it is thought to be primarily from animal-to-animal by infectious agents in feces, urine or saliva. CWD also can persist in the environment and may be contracted from contaminated soil. The movement of live animals is one of the greatest risk factors in spreading the disease to new areas.

CWD is a fatal, animal brain disease. The National Center for Disease Control (CDC) and World Health Organization have found no scientific evidence that the disease presents a health risk to humans. Still, the CDC advises against eating animals known to have CWD. The disease is found in 13 other states and two Canadian provinces, including Wisconsin, North Dakota and South Dakota.

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Posted On: 01/21/2011 12:25 PM
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Tags: minnesota, disease, deer, preliminary, harvested, chronic, test, wasting, southeast, shows
More Tags: disease, Minnesota Department of Natural Resources, Minnesota, Pine Island, hunter, chronic wasting disease, National Center for Disease Control, Michelle Carstensen, Wisconsin, News Tribune, Lou Cornicelli, Tom Landwehr, Ames, Ashland, Animal Health, National Veterinary Services Laboratory, Product Issues, University of Minnesota, infectious agents, fatal, animal brain disease, World Health Organization, Minnesota Board of Animal Health, University of Minnesota, game coordinator, commissioner, wildlife health program leader, big game coordinator, soil, South Dakota, Houston County, Pine County, North Dakota, Olmsted County, Iowa, Duluth News Tribune, Health_Medical_PharmaEnvironment
Region: North Dakota

Categories: General > Conservation
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