About the Authors

Emily S. Almberg

esa5046@psu.edu

Affiliations Northern Rocky Mountain Science Center, United States Geological Survey, Bozeman, Montana, United States of America, The Huck Institutes of the Life Sciences, Pennsylvania State University, University Park, Pennsylvania, United States of America

Paul C. Cross

Affiliation Northern Rocky Mountain Science Center, United States Geological Survey, Bozeman, Montana, United States of America

Christopher J. Johnson

Affiliation Prion Research Laboratory, National Wildlife Health Center, United States Geological Survey, Madison, Wisconsin, United States of America

Dennis M. Heisey

Affiliation Prion Research Laboratory, National Wildlife Health Center, United States Geological Survey, Madison, Wisconsin, United States of America

Bryan J. Richards

Affiliation National Wildlife Health Center, United States Geological Survey, Madison, Wisconsin, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: ESA PCC. Performed the experiments: ESA PCC. Analyzed the data: ESA PCC CJJ DMH BJR. Contributed reagents/materials/analysis tools: BJR CJJ DMH. Wrote the paper: ESA PCC CJJ DMH BJR.