About the Authors

Allison E. Aiello

aielloa@umich.edu

Affiliations Department of Epidemiology, University of Michigan-School of Public Health, Ann Arbor, Michigan, United States of America, Center for Social Epidemiology & Population, University of Michigan-School of Public Health, Ann Arbor, Michigan, United States of America

Vanessa Perez

Affiliations Department of Epidemiology, University of Michigan-School of Public Health, Ann Arbor, Michigan, United States of America, Center for Social Epidemiology & Population, University of Michigan-School of Public Health, Ann Arbor, Michigan, United States of America

Rebecca M. Coulborn

Affiliations Department of Epidemiology, University of Michigan-School of Public Health, Ann Arbor, Michigan, United States of America, Center for Social Epidemiology & Population, University of Michigan-School of Public Health, Ann Arbor, Michigan, United States of America

Brian M. Davis

Affiliations Department of Epidemiology, University of Michigan-School of Public Health, Ann Arbor, Michigan, United States of America, Center for Social Epidemiology & Population, University of Michigan-School of Public Health, Ann Arbor, Michigan, United States of America

Monica Uddin

Affiliations Department of Epidemiology, University of Michigan-School of Public Health, Ann Arbor, Michigan, United States of America, Center for Social Epidemiology & Population, University of Michigan-School of Public Health, Ann Arbor, Michigan, United States of America

Arnold S. Monto

Affiliation Department of Epidemiology, University of Michigan-School of Public Health, Ann Arbor, Michigan, United States of America

Competing Interests

Warner Lambert provided hand sanitizer without any involvement in the study design, analysis, results, or writing of the manuscript. This does not alter the authors' adherence to all the PLoS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: AA AM. Performed the experiments: AA AM VP RC BD. Analyzed the data: AA VP BD. Wrote the paper: AA AM VP RC BD MU.