About the Authors

Michelle R. Mousel

Michelle.Mousel@ars.usda.gov

Current address: USDA, ARS, Animal Disease Research Unit, Pullman, WA, 99164, United States of America

Affiliation Range Sheep Production Efficiency Research Unit, Agricultural Research Service, Department of Agriculture, Dubois, ID, United States of America

James O. Reynolds

Affiliation Animal Disease Research Unit, Agricultural Research Service, Department of Agriculture, Pullman, WA, United States of America

Stephen N. White

Affiliations Animal Disease Research Unit, Agricultural Research Service, Department of Agriculture, Pullman, WA, United States of America, Department of Veterinary Microbiology and Pathology, Washington State University, Pullman, WA, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: MRM SNW. Performed the experiments: MRM JOR SNW. Analyzed the data: MRM SNW. Contributed reagents/materials/analysis tools: MRM SNW. Wrote the paper: MRM JOR SNW.