About the Authors

Tara C. Smith

tara-smith@uiowa.edu

Affiliations Department of Epidemiology, University of Iowa College of Public Health, Iowa City, Iowa, United States of America, Center for Emerging Infectious Diseases, University of Iowa College of Public Health, Iowa City, Iowa, United States of America

Michael J. Male

Affiliations Department of Epidemiology, University of Iowa College of Public Health, Iowa City, Iowa, United States of America, Center for Emerging Infectious Diseases, University of Iowa College of Public Health, Iowa City, Iowa, United States of America

Abby L. Harper

Affiliations Department of Epidemiology, University of Iowa College of Public Health, Iowa City, Iowa, United States of America, Center for Emerging Infectious Diseases, University of Iowa College of Public Health, Iowa City, Iowa, United States of America

Jennifer S. Kroeger

Affiliation Department of Medicine, University of Iowa Carver College of Medicine, Iowa City, Iowa, United States of America

Gregory P. Tinkler

Affiliation Center for Emerging Infectious Diseases, University of Iowa College of Public Health, Iowa City, Iowa, United States of America

Erin D. Moritz

Affiliations Department of Epidemiology, University of Iowa College of Public Health, Iowa City, Iowa, United States of America, Center for Emerging Infectious Diseases, University of Iowa College of Public Health, Iowa City, Iowa, United States of America

Ana W. Capuano

Affiliations Department of Epidemiology, University of Iowa College of Public Health, Iowa City, Iowa, United States of America, Center for Emerging Infectious Diseases, University of Iowa College of Public Health, Iowa City, Iowa, United States of America

Loreen A. Herwaldt

Affiliations Department of Epidemiology, University of Iowa College of Public Health, Iowa City, Iowa, United States of America, Department of Medicine, University of Iowa Carver College of Medicine, Iowa City, Iowa, United States of America, Program of Hospital Epidemiology, University of Iowa Hospitals and Clinics, Iowa City, Iowa, United States of America

Daniel J. Diekema

Affiliations Department of Medicine, University of Iowa Carver College of Medicine, Iowa City, Iowa, United States of America, Program of Hospital Epidemiology, University of Iowa Hospitals and Clinics, Iowa City, Iowa, United States of America, Department of Pathology, University of Iowa Carver College of Medicine, Iowa City, Iowa, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: TCS MJM LAH DJD. Performed the experiments: TCS MJM ALH JSK GPT EDMK. Analyzed the data: TCS AC. Contributed reagents/materials/analysis tools: TCS DJD. Wrote the paper: TCS MJM LAH DJD. Critically revised the manuscript: TCS MJM JSK GPT EDMK LAH DJD.