About the Authors
- Tracy L. Nicholson
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* E-mail: tracy.nicholson@ars.usda.gov
Affiliation National Animal Disease Center, Agricultural Research Service, United States Department of Agriculture, Ames, Iowa, United States of America
- Sarah M. Shore
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Affiliation National Animal Disease Center, Agricultural Research Service, United States Department of Agriculture, Ames, Iowa, United States of America
- Tara C. Smith
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Affiliation Center for Emerging Infectious Diseases, Department of Epidemiology, College of Public Health, University of Iowa, Iowa City, Iowa, United States of America
- Timothy S. Fraena
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Affiliation Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, Iowa, United States of America
Competing Interests
The authors have declared that no competing interests exist.
Author Contributions
Conceived and designed the experiments: TLN. Performed the experiments: SMS. Analyzed the data: TLN SMS. Contributed reagents/materials/analysis tools: TCS TSF. Wrote the manuscript: TLN SMS. Critically reviewed manuscript: TLN SMS TCS TSF.