About the Authors

Timothy M. Uyeki

Contributed equally to this work with: Timothy M. Uyeki, Doan C. Nguyen

tuyeki@cdc.gov

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

Doan C. Nguyen

Contributed equally to this work with: Timothy M. Uyeki, Doan C. Nguyen

Current address: Department of Pediatrics, Emory University School of Medicine, Atlanta, Georgia, United States of America

Affiliation Department of Virology, National Institute of Hygiene and Epidemiology, Ministry of Health, Hanoi, Vietnam

Thomas Rowe

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

Xiuhua Lu

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

Jean Hu-Primmer

Current address: Food and Drug Administration, Silver Spring, Maryland, United States of America

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

Lien P. Huynh

Affiliation Department of Virology, National Institute of Hygiene and Epidemiology, Ministry of Health, Hanoi, Vietnam

Nguyen L. K. Hang

Affiliation Department of Virology, National Institute of Hygiene and Epidemiology, Ministry of Health, Hanoi, Vietnam

Jacqueline M. Katz

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: TU DN JK. Performed the experiments: DC TR XL JHP JK. Analyzed the data: TU DN JK. Contributed reagents/materials/analysis tools: DN LH NH. Wrote the paper: TU DN JK. Collected epidemiological data, colected blood specimens and processed sera, supervised the study, or entered data: DN LH NH.