U.S. Department of the Interior U.S. Geological Survey Chronic Wasting Disease Wildlife Agency...

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U.S. Department of the Interior U.S. Geological Survey Chronic Wasting Disease Wildlife Agency Perspective Leslie Dierauf, V.M.D. USGS National Wildlife Health Center

Transcript of U.S. Department of the Interior U.S. Geological Survey Chronic Wasting Disease Wildlife Agency...

Page 1: U.S. Department of the Interior U.S. Geological Survey Chronic Wasting Disease Wildlife Agency Perspective Leslie Dierauf, V.M.D. USGS National Wildlife.

U.S. Department of the InteriorU.S. Geological Survey

Chronic Wasting Disease Wildlife Agency Perspective

Leslie Dierauf, V.M.D.

USGS National Wildlife Health Center

Page 2: U.S. Department of the Interior U.S. Geological Survey Chronic Wasting Disease Wildlife Agency Perspective Leslie Dierauf, V.M.D. USGS National Wildlife.

CWD – What We Know

Affecting deer and elk for 40+ years

Geographic range has expanded Increased size of endemic

areas Movement to new areas

Transmissible and infectious Horizontal transmission Environmental

contamination

http://www.inspection.gc.ca/english/anima/heasan/disemala/cwdmdc/cwdmdcfse.shtml
Page 3: U.S. Department of the Interior U.S. Geological Survey Chronic Wasting Disease Wildlife Agency Perspective Leslie Dierauf, V.M.D. USGS National Wildlife.

Potential Impacts of CWD

Deer and elk

Other wildlife

Domestic livestock

Humans

Page 4: U.S. Department of the Interior U.S. Geological Survey Chronic Wasting Disease Wildlife Agency Perspective Leslie Dierauf, V.M.D. USGS National Wildlife.

Potential Impacts – Deer & Elk

Population-level impacts are not yet apparent 30% prevalence in “core”

areas Higher prevalence in

males than females Higher prevalence in

mature males

Is CWD a decimating factor in wild deer and elk?

Page 5: U.S. Department of the Interior U.S. Geological Survey Chronic Wasting Disease Wildlife Agency Perspective Leslie Dierauf, V.M.D. USGS National Wildlife.

Addressing the Impacts - Cervids

Surveillance

Spatial Analysis

Genetic markers

Epidemiological modeling

Preclinical biomarkers

CWD+ tissue bank

Risk analysis

Page 6: U.S. Department of the Interior U.S. Geological Survey Chronic Wasting Disease Wildlife Agency Perspective Leslie Dierauf, V.M.D. USGS National Wildlife.

Potential Impacts – Other Wildlife

No transmission documented in the wild Moose and ferret in captive

studies (oral inoculation)

Transmission in other TSEs Scrapie or BSE to mink Kuru BSE to cats BSE to humans (vCJD)

Passaging and the “species barrier”

Can CWD “jump” to other wildlife?

Page 7: U.S. Department of the Interior U.S. Geological Survey Chronic Wasting Disease Wildlife Agency Perspective Leslie Dierauf, V.M.D. USGS National Wildlife.

Addressing Impacts – Other Wildlife

Transmission studies Mice & voles Ferrets Predators

Carrion consumers Carcass consumption

study Testing of scavengers

Page 8: U.S. Department of the Interior U.S. Geological Survey Chronic Wasting Disease Wildlife Agency Perspective Leslie Dierauf, V.M.D. USGS National Wildlife.

Potential Impacts - Livestock

No detected transmission to livestock

Cattle and CWD+ deer commingled No transmission

CWD intracerebrally inoculated into cattle Transmission can occur

Captive cervid industry

Page 9: U.S. Department of the Interior U.S. Geological Survey Chronic Wasting Disease Wildlife Agency Perspective Leslie Dierauf, V.M.D. USGS National Wildlife.

Potential Impacts - Humans

Human health No indication that

transmission has occurred Laboratory studies show

that conversion to human disease form is possible – but at a very low rate

Economics Big Game hunting - $10

billion annually in U.S. Majority to rural

communities Hunting heritage

11 million participants 150 million hunting days

per year

Page 10: U.S. Department of the Interior U.S. Geological Survey Chronic Wasting Disease Wildlife Agency Perspective Leslie Dierauf, V.M.D. USGS National Wildlife.

The Costs of CWD

National CWD Plan in the U.S. Projected cost to implement

National Plan $108 million

over initial 3 years

FY 2003 spending DOI $3.3 million USDA $18.2 million States $15.3 million Federal Aid $2.7 million

Page 11: U.S. Department of the Interior U.S. Geological Survey Chronic Wasting Disease Wildlife Agency Perspective Leslie Dierauf, V.M.D. USGS National Wildlife.

Research & Management - Partnerships

http://wildlife.state.co.us/index.asp
http://www.colostate.edu/
Page 12: U.S. Department of the Interior U.S. Geological Survey Chronic Wasting Disease Wildlife Agency Perspective Leslie Dierauf, V.M.D. USGS National Wildlife.
Page 13: U.S. Department of the Interior U.S. Geological Survey Chronic Wasting Disease Wildlife Agency Perspective Leslie Dierauf, V.M.D. USGS National Wildlife.

Communication Build Trust Embrace Find Time Support Efforts On-the-Ground & Gather Funds Share Information Hands-On Efforts Generate Info Engender Cooperation

Individuals Engagement/Cooperators Community

Seamless Solutions to Partnering and Stewardship

INVOLVE CONNECT CONTRIBUTE EMBRACE


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