About the Authors

Henry C. Baggett

hbaggett@cdc.gov

Affiliations International Emerging Infections Program, Thailand Ministry of Public Health (MOPH) – U.S. Centers for Disease Control and Prevention Collaboration, Nonthaburi, Thailand, Global Disease Detection Branch, Global Disease Detection and Emergency Response Division, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America

Malinee Chittaganpitch

Affiliation National Institute of Health, MOPH, Nonthaburi, Thailand

Somsak Thamthitiwat

Affiliation International Emerging Infections Program, Thailand Ministry of Public Health (MOPH) – U.S. Centers for Disease Control and Prevention Collaboration, Nonthaburi, Thailand

Prabda Prapasiri

Affiliation International Emerging Infections Program, Thailand Ministry of Public Health (MOPH) – U.S. Centers for Disease Control and Prevention Collaboration, Nonthaburi, Thailand

Sathapana Naorat

Affiliation International Emerging Infections Program, Thailand Ministry of Public Health (MOPH) – U.S. Centers for Disease Control and Prevention Collaboration, Nonthaburi, Thailand

Pongpun Sawatwong

Affiliation International Emerging Infections Program, Thailand Ministry of Public Health (MOPH) – U.S. Centers for Disease Control and Prevention Collaboration, Nonthaburi, Thailand

Darunee Ditsungnoen

Affiliation Nakhon Phanom Provincial Health Office, Nakhon Phanom, Thailand

Sonja J. Olsen

Affiliations International Emerging Infections Program, Thailand Ministry of Public Health (MOPH) – U.S. Centers for Disease Control and Prevention Collaboration, Nonthaburi, Thailand, Influenza Division, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America

James M. Simmerman

Affiliation International Emerging Infections Program, Thailand Ministry of Public Health (MOPH) – U.S. Centers for Disease Control and Prevention Collaboration, Nonthaburi, Thailand

Prasong Srisaengchai

Affiliation International Emerging Infections Program, Thailand Ministry of Public Health (MOPH) – U.S. Centers for Disease Control and Prevention Collaboration, Nonthaburi, Thailand

Somrak Chantra

Affiliation Sa Kaeo Provincial Health Office, MOPH, Sa Kaeo, Thailand

Leonard F. Peruski

Affiliations International Emerging Infections Program, Thailand Ministry of Public Health (MOPH) – U.S. Centers for Disease Control and Prevention Collaboration, Nonthaburi, Thailand, Global Disease Detection Branch, Global Disease Detection and Emergency Response Division, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America

Pathom Sawanpanyalert

Affiliation National Institute of Health, MOPH, Nonthaburi, Thailand

Susan A. Maloney

Affiliations International Emerging Infections Program, Thailand Ministry of Public Health (MOPH) – U.S. Centers for Disease Control and Prevention Collaboration, Nonthaburi, Thailand, Global Disease Detection Branch, Global Disease Detection and Emergency Response Division, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America

Pasakorn Akarasewi

Affiliation Bureau of Epidemiology, MOPH, Nonthaburi, Thailand

Competing Interests

One co-author (JMS) is currently employed by Sanofi Pasteur. All other co-authors have declared that no competing interests exist. 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: HCB MC ST P. Sawatwong SJO JMS P. Srisaengchai P. Sawanpanyalert SAM PA. Performed the experiments: MC ST PP SN P. Sawatwong DD SC. Analyzed the data: HCB DD SJO P. Srisaengchai LFP SAM. Contributed reagents/materials/analysis tools: HCB MC SJO P. Srisaengchai LFP P. Sawanpanyalert PA. Wrote the paper: HCB MC ST SJO JMS SAM. Expert guidance and critical review: P. Sawanpanyalert PA.