Distribution of Chronic Wasting Disease in North America, updated April 19, 2024.
Bryan Richards
Bryan Richards is the Emerging Disease Coordinator at the USGS National Wildlife Health Center.
Science and Products
Expanding Distribution of Chronic Wasting Disease
Application of a systems approach for management of chronic wasting disease
Examining PRNP gene frequencies and ‘resistance’ to chronic wasting disease
Distribution of Highly Pathogenic Avian Influenza in North America, 2021/2022
Avian Influenza Surveillance
SARS-CoV-2 in Wildlife
Chronic Wasting Disease
Chronic Wasting Disease distribution in the United States by state and county (ver. 2.0, April 2024)
Distribution of Chronic Wasting Disease in North America, updated April 19, 2024.
Update for the North American Wildlife and Natural Resources Conference from the USGS National Wildlife Health Center - March 2024
linkUpdate for the North American Wildlife and Natural Resources Conference from the USGS National Wildlife Health Center - March 2024
Contents
Update for the North American Wildlife and Natural Resources Conference from the USGS National Wildlife Health Center - March 2024
linkUpdate for the North American Wildlife and Natural Resources Conference from the USGS National Wildlife Health Center - March 2024
Contents
Animated GIF showing changes in distribution of chronic wasting disease in North America from 2000-2023 as documented at the end of each year. Individual files of yearly maps are available at https://doi.org/10.5066/P9HQKKFO.
Animated GIF showing changes in distribution of chronic wasting disease in North America from 2000-2023 as documented at the end of each year. Individual files of yearly maps are available at https://doi.org/10.5066/P9HQKKFO.
Distribution of Chronic Wasting Disease in North America, in Relation to Tribal Lands in the Conterminous United States. Updated on February 27, 2024.
Distribution of Chronic Wasting Disease in North America, in Relation to Tribal Lands in the Conterminous United States. Updated on February 27, 2024.
Distribution of Highly Pathogenic Avian Influenza H5 and H5N1 in North America, 2021/2022. Updated November 27, 2022.
Distribution of Highly Pathogenic Avian Influenza H5 and H5N1 in North America, 2021/2022. Updated November 27, 2022.
Distribution of Highly Pathogenic Avian Influenza H5 and H5N1 in North America, in Relation to U.S. Fish & Wildlife Service Refuges and National Park Service Lands, 2021/2022
linkDistribution of Highly Pathogenic Avian Influenza H5 and H5N1 in North America, in Relation to U.S. Fish & Wildlife Service Refuges and National Park Service Lands, 2021/2022. Updated November 27, 2022.
Distribution of Highly Pathogenic Avian Influenza H5 and H5N1 in North America, in Relation to U.S. Fish & Wildlife Service Refuges and National Park Service Lands, 2021/2022
linkDistribution of Highly Pathogenic Avian Influenza H5 and H5N1 in North America, in Relation to U.S. Fish & Wildlife Service Refuges and National Park Service Lands, 2021/2022. Updated November 27, 2022.
As SARS-CoV-2, the virus that causes COVID-19 in humans, continues to spread globally, questions have emerged about the potential for humans to transmit the virus to North American wildlife, its potential impacts on native wildlife populations, and the resultant possibility and consequences of establishing a persistent wildlife reservoir.
As SARS-CoV-2, the virus that causes COVID-19 in humans, continues to spread globally, questions have emerged about the potential for humans to transmit the virus to North American wildlife, its potential impacts on native wildlife populations, and the resultant possibility and consequences of establishing a persistent wildlife reservoir.
A white-tailed deer (Odocoileus virginianus) in a snowy field in front of forest in Wisconsin.
A white-tailed deer (Odocoileus virginianus) in a snowy field in front of forest in Wisconsin.
A red fox (Vulpes vulpes) at the USGS National Wildlife Health Center prairie.
A red fox (Vulpes vulpes) at the USGS National Wildlife Health Center prairie.
WHISPers—Providing situational awareness of wildlife disease threats to the Nation—A fact sheet for the biosurveillance community
Quarterly wildlife mortality report October 2021
Quarterly wildlife mortality report July 2021
Quarterly wildlife mortality report April 2021
Quarterly wildlife mortality report January 2021
Quarterly wildlife mortality report October 2020
Quarterly wildlife mortality report July 2020
Chronic wasting disease—Research by the U.S. Geological Survey and partners
Quarterly wildlife mortality report July 2019
Quarterly wildlife mortality report April 2019
Quarterly wildlife mortality report January 2019
USGS quarterly wildlife mortality report October 2018
Science and Products
- Science
Expanding Distribution of Chronic Wasting Disease
Chronic wasting disease (CWD) has been detected in 33 US states and five Canadian provinces in free-ranging cervids and/or commercial captive cervid facilities. CWD has been detected in free-ranging cervids in 33 states and four provinces and in captive cervid facilities in 19 states and three provinces.Application of a systems approach for management of chronic wasting disease
The USGS National Wildlife Health Center, Montana Cooperative Wildlife Research Unit, Ventana Systems, Inc. , and the Wisconsin Department of Natural Resources (WIDNR) are applying a systems approach to map and model the complex relationships among ecological, epidemiological, social, and political processes affecting CWD. Through a participatory modeling process, we gathered subject matter...Examining PRNP gene frequencies and ‘resistance’ to chronic wasting disease
Multiple studies have demonstrated that various alleles of the cervid prion protein (PRNP) gene affect chronic wasting disease (CWD) progression.Distribution of Highly Pathogenic Avian Influenza in North America, 2021/2022
The first 2021/2022 detection of Eurasian strain (EA) highly pathogenic avian influenza (HPAI) H5N1 in North America occurred in December 2021 in Newfoundland and Labrador, Canada. Subsequently, HPAI EA H5 and EA H5N1 viruses have been confirmed in wild birds, backyard flocks, commercial poultry facilities, and wild mammals in both Canada and the United States. This HPAI distribution map will be...Avian Influenza Surveillance
The USGS National Wildlife Health Center (NWHC) conducts surveillance in wild birds to facilitate early detection and situational awareness for high consequence pathogens, including highly pathogenic avian influenza (HPAI) viruses.SARS-CoV-2 in Wildlife
As SARS-CoV-2, the virus that causes COVID-19 in humans, continues to spread globally, questions have emerged about the potential for humans to transmit the virus to North American wildlife, its potential effects on native wildlife populations, and the resultant possibility and consequences of establishing a persistent wildlife reservoir. Recent studies have detected SARS-CoV-2 in escaped or wild...Chronic Wasting Disease
Chronic wasting disease (CWD) is an emerging infectious disease that is fatal to free-ranging and captive animals in Cervidae, the deer family. CWD is one member of a family of diseases called transmissible spongiform encephalopathies (TSEs), and is thought to be caused by prions. CWD is the only TSE known to affect free-ranging wildlife. - Data
Chronic Wasting Disease distribution in the United States by state and county (ver. 2.0, April 2024)
Chronic Wasting Disease (CWD) is a fatal, contagious, neuro-degenerative disease affecting multiple members of the Family Cervidae. First detected in 1967, the disease has, as of March 2021, been documented in free-ranging and/or captive cervid populations in 26 states, three Canadian provinces, the Republic of South Korea, Norway, Sweden, and Finland. The data provided here contains information o - Multimedia
Distribution of Chronic Wasting Disease in North AmericaDistribution of Chronic Wasting Disease in North America
Distribution of Chronic Wasting Disease in North America, updated April 19, 2024.
Distribution of Chronic Wasting Disease in North America, updated April 19, 2024.
Update for the North American Wildlife and Natural Resources Conference from the USGS National Wildlife Health Center - March 2024Update for the North American Wildlife and Natural Resources Conference from the USGS National Wildlife Health Center - March 2024
linkUpdate for the North American Wildlife and Natural Resources Conference from the USGS National Wildlife Health Center - March 2024
Contents
Update for the North American Wildlife and Natural Resources Conference from the USGS National Wildlife Health Center - March 2024
linkUpdate for the North American Wildlife and Natural Resources Conference from the USGS National Wildlife Health Center - March 2024
Contents
Chronic wasting disease: change in documented distribution in North America 2000-2023Chronic wasting disease: change in documented distribution in North America 2000-2023Animated GIF showing changes in distribution of chronic wasting disease in North America from 2000-2023 as documented at the end of each year. Individual files of yearly maps are available at https://doi.org/10.5066/P9HQKKFO.
Animated GIF showing changes in distribution of chronic wasting disease in North America from 2000-2023 as documented at the end of each year. Individual files of yearly maps are available at https://doi.org/10.5066/P9HQKKFO.
Distribution of CWD in Relation to Tribal Lands in the U.S.Distribution of CWD in Relation to Tribal Lands in the U.S.Distribution of Chronic Wasting Disease in North America, in Relation to Tribal Lands in the Conterminous United States. Updated on February 27, 2024.
Distribution of Chronic Wasting Disease in North America, in Relation to Tribal Lands in the Conterminous United States. Updated on February 27, 2024.
Distribution of Highly Pathogenic Avian Influenza H5 and H5N1 in North America, 2021/2022Distribution of Highly Pathogenic Avian Influenza H5 and H5N1 in North America, 2021/2022Distribution of Highly Pathogenic Avian Influenza H5 and H5N1 in North America, 2021/2022. Updated November 27, 2022.
Distribution of Highly Pathogenic Avian Influenza H5 and H5N1 in North America, 2021/2022. Updated November 27, 2022.
Distribution of Highly Pathogenic Avian Influenza H5 and H5N1 in North America, in Relation to U.S. Fish & Wildlife Service Refuges and National Park Service Lands, 2021/2022Distribution of Highly Pathogenic Avian Influenza H5 and H5N1 in North America, in Relation to U.S. Fish & Wildlife Service Refuges and National Park Service Lands, 2021/2022Distribution of Highly Pathogenic Avian Influenza H5 and H5N1 in North America, in Relation to U.S. Fish & Wildlife Service Refuges and National Park Service Lands, 2021/2022
linkDistribution of Highly Pathogenic Avian Influenza H5 and H5N1 in North America, in Relation to U.S. Fish & Wildlife Service Refuges and National Park Service Lands, 2021/2022. Updated November 27, 2022.
Distribution of Highly Pathogenic Avian Influenza H5 and H5N1 in North America, in Relation to U.S. Fish & Wildlife Service Refuges and National Park Service Lands, 2021/2022
linkDistribution of Highly Pathogenic Avian Influenza H5 and H5N1 in North America, in Relation to U.S. Fish & Wildlife Service Refuges and National Park Service Lands, 2021/2022. Updated November 27, 2022.
General Guidance for Communicating about SARS-CoV-2 in WildlifeAs SARS-CoV-2, the virus that causes COVID-19 in humans, continues to spread globally, questions have emerged about the potential for humans to transmit the virus to North American wildlife, its potential impacts on native wildlife populations, and the resultant possibility and consequences of establishing a persistent wildlife reservoir.
As SARS-CoV-2, the virus that causes COVID-19 in humans, continues to spread globally, questions have emerged about the potential for humans to transmit the virus to North American wildlife, its potential impacts on native wildlife populations, and the resultant possibility and consequences of establishing a persistent wildlife reservoir.
White-tailed deer in snowA white-tailed deer (Odocoileus virginianus) in a snowy field in front of forest in Wisconsin.
A white-tailed deer (Odocoileus virginianus) in a snowy field in front of forest in Wisconsin.
Red fox (Vulpes vulpes) in prairieA red fox (Vulpes vulpes) at the USGS National Wildlife Health Center prairie.
A red fox (Vulpes vulpes) at the USGS National Wildlife Health Center prairie.
- Publications
Filter Total Items: 23
WHISPers—Providing situational awareness of wildlife disease threats to the Nation—A fact sheet for the biosurveillance community
Solutions for emerging infectious disease and bioterror threats can be improved by incorporating integrated biodefense strategies, including improved surveillance for animal and zoonotic diseases, strong national leadership, and effective management tools. Active biosurveillance for disease events is key to early detection, warning, and overall situational awareness and enables better communicatioAuthorsBryan J. Richards, Kimberli J.G. Miller, C. LeAnn WhiteQuarterly wildlife mortality report October 2021
The USGS National Wildlife Health Center (NWHC) Quarterly Mortality Report provides brief summaries of epizootic mortality and morbidity events by quarter. The write-ups, highlighting epizootic events and other wildlife disease topics of interest, are published in the Wildlife Disease Association quarterly newsletter. A link is provided in this WDA newsletter to the Wildlife Health Information ShaAuthorsBryan J. Richards, Daniel A. Grear, Shelby Jo WeidenkopfQuarterly wildlife mortality report July 2021
The USGS National Wildlife Health Center (NWHC) Quarterly Mortality Report provides brief summaries of epizootic mortality and morbidity events by quarter. The write-ups, highlighting epizootic events and other wildlife disease topics of interest, are published in the Wildlife Disease Association quarterly newsletter. A link is provided in this WDA newsletter to the Wildlife Health Information ShaAuthorsBryan J. Richards, Anne Ballmann, Julia S. Lankton, Thierry M. Work, Jaimie L. MillerQuarterly wildlife mortality report April 2021
The USGS National Wildlife Health Center (NWHC) Quarterly Mortality Report provides brief summaries of epizootic mortality and morbidity events by quarter. The write-ups, highlighting epizootic events and other wildlife disease topics of interest, are published in the Wildlife Disease Association quarterly newsletter. A link is provided in this WDA newsletter to the Wildlife Health Information ShaAuthorsBryan J. Richards, Robin E. Russell, Anne BallmannQuarterly wildlife mortality report January 2021
The USGS National Wildlife Health Center (NWHC) Quarterly Mortality Report provides brief summaries of epizootic mortality and morbidity events by quarter. The write-ups, highlighting epizootic events and other wildlife disease topics of interest, are published in the Wildlife Disease Association quarterly newsletter. A link is provided in this WDA newsletter to the Wildlife Health Information ShaAuthorsBryan J. Richards, Barbara Bodenstein, Daniel A. Grear, Hon S. Ip, Anne Ballmann, Julia S. Lankton, Valerie I. Shearn-BochslerQuarterly wildlife mortality report October 2020
The USGS National Wildlife Health Center (NWHC) Quarterly Mortality Report provides brief summaries of epizootic mortality and morbidity events by quarter. The write-ups, highlighting epizootic events and other wildlife disease topics of interest, are published in the Wildlife Disease Association quarterly newsletter. A link is provided in this WDA newsletter to the Wildlife Health Information ShaAuthorsBryan J. Richards, Jeffrey M. Lorch, Daniel A. GrearQuarterly wildlife mortality report July 2020
The USGS National Wildlife Health Center (NWHC) Quarterly Mortality Report provides brief summaries of epizootic mortality and morbidity events by quarter. The write-ups, highlighting epizootic events and other wildlife disease topics of interest, are published in the Wildlife Disease Association quarterly newsletter. A link is provided in this WDA newsletter to the Wildlife Health Information ShaAuthorsBryan J. Richards, Anne Ballmann, Barbara Bodenstein, Robert J. Dusek, Jonathan M. SleemanChronic wasting disease—Research by the U.S. Geological Survey and partners
IntroductionChronic wasting disease (CWD) is the only transmissible spongiform encephalopathy, a class of invariably fatal neurodegenerative mammalian diseases associated with a misfolded cellular prion protein found in wild free-ranging animals. Because it has a long incubation period, affected animals in Cervidae (the deer family; referred to as “cervids”) may not show signs of disease for severAuthorsM. Camille Hopkins, Christina M. Carlson, Paul C. Cross, Christopher J. Johnson, Bryan J. Richards, Robin E. Russell, Michael D. Samuel, Glen A. Sargeant, Daniel P. Walsh, W. David WalterQuarterly wildlife mortality report July 2019
No abstract available.AuthorsBryan J. Richards, Robert J. DusekQuarterly wildlife mortality report April 2019
No abstract available.AuthorsBryan J. Richards, Daniel A. Grear, C. LeAnn White, Thierry M. Work, Emily A UnderwoodQuarterly wildlife mortality report January 2019
The USGS National Wildlife Health Center (NWHC) Quarterly Mortality Report provides brief summaries of epizootic mortality and morbidity events by quarter. The write-ups, highlighting epizootic events and other wildlife disease topics of interest, are published in the Wildlife Disease Association quarterly newsletter. A link is provided in this WDA newsletter to the Wildlife Health Information ShaAuthorsBryan J. Richards, Barbara Bodenstein, Robert J. Dusek, Tonie E. Rocke, Katherine L. D. RichgelsUSGS quarterly wildlife mortality report October 2018
No abstract available.AuthorsBryan J. Richards, Robert J. Dusek, Anne Ballmann, Natalie T. Nguyen - News