About the Authors

Sharia M. Ahmed

Affiliations Epidemiology Branch, Division of Viral Diseases, National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America, Department of Environmental Health, Emory University, Atlanta, Georgia, United States of America

Benjamin A. Lopman

blopman@cdc.gov

Affiliation Epidemiology Branch, Division of Viral Diseases, National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America

Karen Levy

Affiliation Department of Environmental Health, Emory University, Atlanta, Georgia, United States of America

Competing Interests

Ben A. Lopman has previously served as a PLOS Academic Editor. 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: KL. Performed the experiments: SMA. Analyzed the data: SMA BAL KL. Contributed reagents/materials/analysis tools: SMA BAL KL. Wrote the paper: SMA BAL KL.