Bryan Richards
Science and Products
Expanding Distribution of Chronic Wasting Disease
Chronic wasting disease (CWD) has been detected in 26 US states and three Canadian provinces in free-ranging cervids and/or commercial captive cervid facilities. CWD has been detected in free-ranging cervids in 25 states and two provinces and in captive cervid facilities in 17 states and three provinces.
Application of a Systems Approach for Management of Chronic Wasting Disease in Wisconsin
Chronic wasting disease (CWD), a fatal neurologic disease of cervids that causes population declines and is increasing in intensity and spatial extent, has proven extremely difficult to manage despite intensive control efforts that have spanned several decades.
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.
Quarterly 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...
Richards, Bryan J.; Russell, Robin E.; Ballmann, Anne Quarterly 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...
Richards, Bryan J.; Bodenstein, Barbara; Grear, Daniel A.; Ip, Hon S.; Ballmann, Anne; Lankton, Julia S.; Shearn-Bochsler, Valerie I. Quarterly 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...
Richards, Bryan J.; Grear, Daniel A. Quarterly 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...
Richards, Bryan J.; Ballmann, Anne; Bodenstein, Barbara; Dusek, Robert J.; Sleeman, Jonathan M.
Chronic 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...
Hopkins, M. Camille; Carlson, Christina M.; Cross, Paul C.; Johnson, Christopher J.; Richards, Bryan J.; Russell, Robin E.; Samuel, Michael D.; Sargeant, Glen A.; Walsh, Daniel P.; Walter, W. David Quarterly wildlife mortality report July 2019
No abstract available.
Richards, Bryan J.; Dusek, Robert J. Quarterly wildlife mortality report April 2019
No abstract available.
Richards, Bryan J.; Grear, Daniel A.; White, C. LeAnn; Work, Thierry M.; Underwood, Emily A USGS-NWHC Quarterly 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...
Richards, Bryan J.; Bodenstein, Barbara; Dusek, Robert J.; Rocke, Tonie E.; Richgels, Katherine L. D. USGS-NWHC Quarterly Wildlife Mortality Report - October 2018
No abstract available.
Richards, Bryan J.; Dusek, Robert J.; Ballmann, Anne; Nguyen, Natalie T. USGS-NWHC Quarterly Wildlife Mortality Report - July 2018
No abstract available.
Richards, Bryan J.; Bodenstein, Barbara; Ballmann, Anne; St. Martin, Michelle USGS-NWHC Quarterly Wildlife Mortality Report- April 2018
No abstract available.
Richards, Bryan J.; Bodenstein, Barbara; Ballmann, Anne; White, C. LeAnn
Chronic wasting disease—Status, science, and management support by the U.S. Geological Survey
The U.S. Geological Survey (USGS) investigates chronic wasting disease (CWD) at multiple science centers and cooperative research units across the Nation and supports the management of CWD through science-based strategies. CWD research conducted by USGS scientists has three strategies: (1) to understand the biology, ecology, and causes and...
Carlson, Christina M.; Hopkins, M. Camille ; Nguyen, Natalie T.; Richards, Bryan J.; Walsh, Daniel P.; Walter, W. David