CWD was first identified

January 12, 1967

CWD was first identified as a clinical disease in captive mule deer at the Colorado Division of Wildlife Foothills Wildlife Research Facility in Fort Collins, Colorado.

Read more

Classified as a TSE

February 4, 1978

CWD was officially classified as a Transmissible Spongiform Encephalopathy (TSE). TSE’s include scrapie in sheep and goats, Mad Cow disease in cattle, and Creutzfeldt-Jakob disease in humans.

Read more

First recognized in captive mule & black-tailed deer

June 6, 1979

CWD was first recognized in captive mule deer and black-tailed deer at the Wyoming Fish and Game Department’s Sybille wildlife research facility. CWD was diagnosed in captive elk for the first time.

Read more

The first diagnosis of CWD in Canada

January 1, 1981

The first diagnosis of CWD in Canada was in 1981 in mule deer at the Toronto Zoo.

Read more

First documented case of CWD in a wild cervid

September 9, 1981

The Colorado Division of Wildlife identified CWD in a wild elk, marking the first documented case of CWD in a wild cervid.

Read more

First confirmed case of CWD in a wild mule deer

February 4, 1985

The Colorado Division of Wildlife confirmed the presence of CWD in a wild mule deer for the first time. The Colorado Division of Wildlife attempted to eliminate CWD from the Fort Collins Foothills Wildlife Research Facility by treating the soil with chlorine, removing the treated soil, and applying an additional chlorine treatment before letting the facility remain vacant for more than a year. The effort was unsuccessful. The Wyoming Fish and Game Department identified CWD in a wild mule deer, marking the state’s first case of CWD in a wild cervid.

Read more

First CWD case outside “endemic zone”

February 4, 1996

CWD was found for the first time outside of the Colorado/Wyoming CWD “endemic zone” in a captive elk farm in Saskatchewan.

Read more

First CWD case outside “endemic zone”

July 10, 1996

CWD was found for the first time outside of the Colorado/Wyoming CWD “endemic zone” in a captive elk farm in Saskatchewan.

Read more

First documented cases of CWD in South Dakota

February 20, 1997

CWD is identified on several captive elk facilities in South Dakota, marking the first documented cases of CWD in the state.

Read more

Infected Elk Found in Philipsburg

April 15, 1998

June 1998 and again in June 1999, elk shipped to Oklahoma from an alternative livestock facility near Philipsburg were confirmed to have CWD.

Read more

First Documented Case in Nebraska

July 15, 1999

The Nebraska Game and Parks Commission discovered CWD in a wild mule deer, the state’s first documented case of the disease. CWD is detected in a captive elk facility in Oklahoma, marking the first time the disease was found in the state. In November and December 1999, all 83 elk at the Philipsburg facility in Montana (the source of the CWD captive positive in Oklahoma) were destroyed.

Read more

First Case in Saskatchewan

December 15, 2000

CWD was found in a Saskatchewan mule deer, marking the first time the disease was found in the province’s wild cervids.

Read more

First case in South Korea

December 28, 2000

Chronic wasting disease (CWD) has been recognized as an important prion disease in native North American deer and Rocky Mountain elk. The disease is a unique member of the transmissible spongiform encephalopathies (TSEs), which naturally affects only a few species. CWD had been limited to USA and Canada until 2000. On 28 Dec 2000, information from the Canadian government showed that a total of 95 elk had been exported from farms with CWD to Korea. These consisted of 23 elk in 1994 originating from the so-called “source farm” in Canada and 72 elk in 1997 which had been held in pre-export quarantine at the source farm. Based on export information of CWD-suspected elk from Canada to Korea, a CWD surveillance program was initiated by the Ministry of Agriculture and Forestry (MAF) in 2001. All elk imported in 1997 were traced back; however, elk imported in 1994 were impossible to identify. CWD control measures included stamping out of all animals in the affected farm and thorough cleaning and disinfection of the premises. In addition, nationwide clinical surveillance of Korean native cervids and improved measures to ensure reporting of CWD suspect cases were implemented. A total of 9 elk were found to be affected. CWD was designated as a notifiable disease under the Act for Prevention of Livestock Epidemics in 2002. Additional CWD cases — 12 elk and 2 elk — were diagnosed in 2004 and 2005. Since February 2005, when slaughtered elk were found to be positive, all slaughtered cervids for…

Read more

First Cases in Nebraska and South Dakota

February 4, 2001

South Dakota discovered CWD in wild white-tailed deer for the first time. Nebraska discovered CWD in a captive white-tailed deer facility for the first time

Read more

First Documented Case in Wisconsin

February 4, 2002

The Wisconsin Department of Natural Resources detected CWD in wild white-tailed deer, the state’s first documented case of CWD.

Read more

First Case in New Mexico

June 19, 2002

SANTA FE, N.M. – A mule deer collected from the White Sands Missile Range has tested positive for Chronic Wasting Disease and the director of the New Mexico Department of Game and Fish declared an Animal Health Emergency Tuesday, closing the state to any importation of deer or elk. Director Larry Bell said the positive test was confirmed Monday, June 17, by the Wyoming State Veterinary Laboratory. This is the first positive test for CWD in the state of New Mexico. The disease is a transmissible spongiform encephalopathy (TSE), a neurological disease that is always fatal to deer and elk. It has been found in free-ranging deer and elk in Colorado, Wyoming, Nebraska, Wisconsin, South Dakota and the Canadian province of Saskatchewan. CWD has been more commonly found on or near game farms, although there are no such facilities near White Sands Missile Range. “We are closing the borders to the importation of cervids because Chronic Wasting Disease has been identified here and we want to isolate it and prevent its spread,” Director Bell said. Game ranches have been identified as a source of CWD and now that the disease has been discovered here, the state must take all steps to prevent any additional outbreaks or infection. “New Mexico and all other states are trying to find ways to shore up their importation regulations as we search for a means of managing and preventing CWD,” Bell said. Other states that have banned or restricted the importation of deer species include:…

Read more

The 1st International CWD Symposium was held in Denver, Colorado.

August 6, 2002

First Case in Minnesota

August 30, 2002

Chronic Wasting Disease found in a farmed elk from Aitkin County. Case marks the first time this disease has been detected in Minnesota ST. PAUL, Minn. – The Minnesota Board of Animal Health today announced that a single animal from an Aitkin County domestic elk herd has tested positive for Chronic Wasting Disease (CWD). The case marks the first time this disease of elk and deer has been detected in Minnesota. A sample of the five-year-old male elk’s brain was submitted to the U.S. Department of Agriculture’s National Veterinary Services Laboratories (NVSL) in Ames, Iowa, after the animal died from an unknown illness. Subsequent testing at NVSL confirmed that the animal had CWD. NVSL’s positive finding prompted the Board of Animal Health to immediately quarantine the herd. This quarantine means no animals can move on or off the farm. In the coming days, federal and state officials will decide the ultimate disposition of the herd. Four years ago, Minnesota implemented a voluntary CWD monitoring program for farmed deer and elk herds. Every time a deer or elk from one of the enrolled farms dies or is slaughtered, its brain is tested for CWD. Theherd from which the CWD positive animal came was enrolled in the monitoring program since 2000, and in that time four other animals were tested for CWD. All four animals tested negative. CWD is a fatal brain and nervous system disease found in elk and deer in certain parts of North America. The disease is caused by an…

Read more

Chronic Wasting Disease Found in Portage County

September 20, 2002

Saskatchewan detected CWD in a mule deer outside of the province’s previously delineated CWD containment area

October 31, 2002

The Illinois Department of Natural Resources discovered CWD in a wild white-tailed deer, the state’s first documented case of CWD.

November 1, 2002

First case of CWD in Alberta

November 6, 2002

First Case in Wyoming

November 18, 2002

First Documented Case in Illinois

November 19, 2002

First Case in South Dakota

November 19, 2002

First Case in Utah

February 18, 2003

A dot blot ELISA test for CWD, developed by VMRD, Inc., was licensed for CWD testing.

March 7, 2003

United States Department of Agriculture licensed a CWD dot plot (ELISA) test developed by VMRD, Inc.

March 7, 2003

U.S. Senator Wayne Allard (R-CO) introduced a comprehensive bi-partisan bill targeted at coordinating and increasing federal response to CWD management.

May 9, 2003

Rep. Ron Kind (D-WI) introduced two bills created to assist states in combating the spread of CWD

June 12, 2003

the National Chronic Wasting Disease Task Force Establishment Act and the Chronic Wasting Disease Research, Monitoring, and Education Enhancement Act.

Read more

The United States Department of Agriculture approved a second-generation CWD test

July 15, 2003

developed by Bio-Rad Laboratories, Inc.

Read more

Congress approved a bill that includes $4.2 million to expand research on CWD in wild deer and elk populations.

November 4, 2003

Tommy Thompson announced creation of a federal interagency working group

September 24, 2004

Agriculture Secretary Ann M. Veneman and Health and Human Services Secretary Tommy Thompson announced creation of a federal interagency working group to identify gaps in scientific knowledge about abnormal prion proteins and promote coordination of prion research projects by federal agencies.

Read more

First Case in Wyoming

October 22, 2004

The Wyoming Game and Fish Department discovered the presence of CWD for the first time on the east slope of the Snowy Range Mountains in the north-central part of the state.

Read more

CWD was set as a national priority

October 28, 2004

CWD was set as a national priority for piloting a Wildlife Disease Action Plan by the Canadian Councils of Resource Ministers.

Read more

Strange case found in Nebraska

December 10, 2004

The Nebraska Game and Parks Commission confirmed a case of CWD in a white-tailed deer near the town of Grand Island. This is approximately 250 miles east of the Panhandle where all previous cases of CWD had been documented.

Read more

Case of Interest in Colorado

January 28, 2005

The Colorado Division of Wildlife identified a case of CWD in a mule deer south of Colorado Springs. This is the farthest south on the Front Range that CWD has been detected.

Read more

First Case in New York

March 31, 2005

The New York State Department of Agriculture and Markets confirmed the presence of CWD in a captive white-tailed deer, marking the state’s first documented case of CWD.

Read more

First Wild Case in New York

April 27, 2005

The New York State Department of Environmental Conservation discovered CWD in a wild white-tailed deer from Oneida County. This documented the first case of CWD found in the state’s wild deer populations.

Read more

The 2nd International CWD Symposium was held in Madison, Wisconsin.

July 12, 2005

First Case in West Virginia

September 2, 2005

The first documented case of CWD in West Virginia is identified in a wild white-tailed deer.

Read more

First Case in Colorado found in a Moose

September 29, 2005

The Colorado Division of Wildlife confirmed the first documented case of CWD in a wild moose.

Read more

First Case in New Mexico’s Wild Elk

December 9, 2005

The New Mexico Department of Fish and Game discovered CWD in two wild elk from the Sacramento Mountains, documenting the first cases of CWD found in the state’s wild elk populations.

Read more

First Case in Kansas

January 24, 2006

Kansas Department of Wildlife and Parks discovered CWD in a white-tailed deer from Cheyenne County. This is the first time CWD was found in the state.

Read more

Discovery: CWD prions are present in the leg muscles of infected deer.

January 27, 2006

Researchers at the University of Kentucky found that CWD prions are present in the leg muscles of infected deer.

Read more

First Case in Minnesota

March 15, 2006

The Minnesota Board of Animal Health confirmed that a captive white-tailed deer from Lac Qui Parle County tested positive for CWD. This is the state’s first case of CWD in captive white-tailed deer.

Read more

Discovery: infectious prions adhere to specific soil minerals where they remain infective.

April 14, 2006

University of Wisconsin-Madison researchers discovered that infectious prions adhere to specific soil minerals where they remain infective.

Read more

Strange Case in New Mexico

July 7, 2006

The New Mexico Game and Fish Department identified CWD in a mule deer on the Stallion site of White Sands Missile Range, 75 miles further north of the state’s northernmost infection area.

Read more

Discovery: infectious prions are capable of transmitting CWD through saliva and blood.

October 6, 2006

Colorado State University researchers found that infectious prions are capable of transmitting CWD through saliva and blood.

Read more

First Case in Alberta

April 5, 2007

The first white-tailed deer to test positive for CWD in Alberta was identified by the Canadian Food Inspection Agency.

Read more

E-Book Published

April 5, 2007

The Utah Division of Wildlife Resources published an e-book addressing various modeling approaches to describe the spatial epidemiology of CWD.

Read more

Discovery: the infectivity of prions significantly increases when they are bound to certain soil minerals.

June 13, 2007

Research from the University of Wisconsin-Madison revealed that the infectivity of prions significantly increases when they are bound to certain soil minerals.

Read more

First Case in Saskatchewan

July 6, 2007

The first cases of CWD in Saskatchewan’s wild elk population are found in the province’s east-central region.

Read more

New pre-mortem CWD test for elk Developed

May 15, 2008

Researchers from the U.S. Department of Agriculture’s Animal and Plant Health Inspection Service and Colorado State University developed a new pre-mortem CWD test for elk.

Read more

First Case in Michigan

June 2, 2008

The Michigan Department of Natural Resources detected CWD in a captive white-tailed deer from Kent County. This is state’s first documented case of CWD.

Read more

first infected moose found outside of colorado

August 25, 2008

The Wyoming Game and Fish Department discovered CWD in a wild moose. This is the first time a moose infected with CWD is found outside of Colorado.

Read more

infected meat found at a farmers market

October 17, 2008

Elk meat sold at a Longmont, Colorado farmers market was found to come from a captive elk infected with CWD.

Read more

Discovery

December 25, 2008

Researchers found that prions are shed in the feces of early-stage CWD-infected deer.

Read more

Grant Given to CWD Researchers

September 9, 2009

Colorado State University researchers were granted $2.5 million from the National Science Foundation to study transmission of CWD.

Read more

First Case in Virginia

January 20, 2010

The first documented case of CWD in Virginia is identified in a wild white-tailed deer.

Read more

First Case in Missouri

February 25, 2010

The Missouri Department of Agriculture discovers the state’s first case of CWD in a captive white-tailed deer.

Read more

First Case in North Dakota

March 17, 2010

The first documented case of CWD in North Dakota is identified in a wild mule deer.

Read more

First Wild Case in Minnesota

January 26, 2011

Minnesota’s first documented case of CWD in a wild cervid is identified in a white-tailed deer.

Read more

First Case in Maryland

February 10, 2011

The first documented case of CWD in Maryland is identified in a wild white-tailed deer.

Read more

First Free Range Case in Missouri

January 24, 2012

The first cases of CWD in Missouri’s free-ranging cervids are found in two white-tailed deer.

Read more

First Case in Texas

July 10, 2012

CWD detected in far west Texas

Read more

First Case in Pennsylvania

October 11, 2012

First case of CWD found in captive Pennsylvania deer.

Read more

First Case in Iowa

April 9, 2014

Chronic wasting disease detected for first time in wild Iowa deer.

Read more

First Free Ranging Case in Michigan

May 26, 2015

Michigan confirms state’s first case of chronic wasting disease in free-ranging white-tailed deer.

Read more

First Case of CWD found in Arkansas

October 15, 2015

Read more here

Read more