About the Authors

Carrie Reed

creed1@cdc.gov

Affiliations Influenza Division, National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America, Epidemic Intelligence Service, Office of Workforce and Career Development, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America

Shabir A. Madhi

Affiliations Respiratory and Meningeal Pathogens Research Unit, Department of Science and Technology/National Research Foundation, Vaccine Preventable Diseases and Medical Research Council, University of the Witwatersrand, Bertsham, South Africa, Hubert Department of Public Health, Rollins School of Public Health, Emory University, Atlanta, Georgia, United States of America

Keith P. Klugman

Affiliations Respiratory and Meningeal Pathogens Research Unit, Department of Science and Technology/National Research Foundation, Vaccine Preventable Diseases and Medical Research Council, University of the Witwatersrand, Bertsham, South Africa, Hubert Department of Public Health, Rollins School of Public Health, Emory University, Atlanta, Georgia, United States of America

Locadiah Kuwanda

Affiliation Respiratory and Meningeal Pathogens Research Unit, Department of Science and Technology/National Research Foundation, Vaccine Preventable Diseases and Medical Research Council, University of the Witwatersrand, Bertsham, South Africa

Justin R. Ortiz

Affiliations Epidemic Intelligence Service, Office of Workforce and Career Development, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America, University of Washington, Seattle, Washington, United States of America

Lyn Finelli

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

Alicia M. Fry

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

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: CR SM KPK LK LF AMF. Analyzed the data: CR JRO. Wrote the paper: CR AMF.