About the Authors

Saverio Caini

s.caini@nivel.nl

Affiliation Netherlands Institute for Health Services Research (NIVEL), Utrecht, The Netherlands

Winston Andrade

Affiliation Sección de Virus Respiratorios y Exantemáticos, Instituto de Salud Pública de Chile, Santiago de Chile, Chile

Selim Badur

Affiliation Istanbul University, Istanbul, Turkey

Angel Balmaseda

Affiliation National Influenza Center, Ministry of Health, Managua, Nicaragua

Amal Barakat

Affiliation National Influenza Center, Institut National d'Hygiène, Ministry of Health, Rabat, Morocco

Antonino Bella

Affiliation National Center for Epidemiology, Surveillance and Health Promotion National Institute of Health, Rome, Italy

Abderrahman Bimohuen

Affiliation National Influenza Center, Institut National d'Hygiène, Ministry of Health, Rabat, Morocco

Lynnette Brammer

Affiliation Epidemiology and Prevention Branch, Influenza Division, Centers for Disease Control and Prevention, Atlanta, GA, United States of America

Joseph Bresee

Affiliation Epidemiology and Prevention Branch, Influenza Division, Centers for Disease Control and Prevention, Atlanta, GA, United States of America

Alfredo Bruno

Affiliation Centro de Referencia Nacional de Influenza y Otros Virus Respiratorios, Instituto Nacional de Investigación en Salud Pública (INSPI), Guayaquil, Ecuador

Leticia Castillo

Affiliation National Influenza Center, Ministry of Health, Guatemala City, Guatemala

Meral A. Ciblak

Affiliation Istanbul University, Istanbul, Turkey

Alexey W. Clara

Affiliation US Centers for Disease Control, Central American Region, Guatemala City, Guatemala

Cheryl Cohen

Affiliations Centre for Respiratory Diseases and Meningitis (CRDM), National Institute for Communicable Diseases, Johannesburg, South Africa, School of Public Health, Faculty of Health Science, University of the Witwatersrand, Johannesburg, South Africa

Jeffery Cutter

Affiliation Communicable Diseases Division, Ministry of Health, Singapore, Singapore

Coulibaly Daouda

Affiliation Respiratory Viruses Unit, Pasteur Institute of Côte d’Ivoire, Abidjan, Côte d’Ivoire

Celina de Lozano

Affiliation National Influenza Center, Ministry of Health, San Salvador, El Salvador

Domenica De Mora

Affiliation Centro de Referencia Nacional de Influenza y Otros Virus Respiratorios, Instituto Nacional de Investigación en Salud Pública (INSPI), Guayaquil, Ecuador

Kunzang Dorji

Affiliation Public Health Laboratory, Department of Public Health, Ministry of Health, Thimphu, Bhutan

Gideon O. Emukule

Affiliation US Centers for Disease Control and Prevention, Nairobi, Kenya

Rodrigo A. Fasce

Affiliation Sección de Virus Respiratorios y Exantemáticos, Instituto de Salud Pública de Chile, Santiago de Chile, Chile

Luzhao Feng

Affiliation Division of Infectious Disease, Key Laboratory of Surveillance and Early-warning on Infectious Disease, Chinese Center for Disease Control and Prevention, Beijing, China

Walquiria Aparecida Ferreira de Almeida

Affiliation Ministry of Health, Brasília, DF, Brazil

Raquel Guiomar

Affiliation National Influenza Reference Laboratory, Infectious Diseases Department, National Institute of Health, Lisbon, Portugal

Jean-Michel Heraud

Affiliation National Influenza Center, Virology Unit, Institut Pasteur of Madagascar, Antananarivo, Madagascar

Olha Holubka

Affiliation L.V.Gromashevsky Institute of Epidemiology and Infectious Diseases National Academy of Medical Science of Ukraine, Kiev, Ukraine

Q. Sue Huang

Affiliation Institute of Environmental Science and Research, Wellington, New Zealand

Herve A. Kadjo

Affiliation Respiratory Viruses Unit, Pasteur Institute of Côte d’Ivoire, Abidjan, Côte d’Ivoire

Lyazzat Kiyanbekova

Affiliation Zonal Virology Laboratory, Astana Center of Sanitary Epidemiology Expertise, Astana, Kazakhstan

Herman Kosasih

Affiliation US Naval Medical Research Unit No. 2, Jakarta, Indonesia

Gabriela Kusznierz

Affiliation Instituto Nacional de Enfermedades Respiratorias “Dr. Emilio Coni,” Santa Fe, Argentina

Jenny Lara

Affiliation National Influenza Center, Ministry of Health, San José, Costa Rica

Ming Li

Affiliation Division of Infectious Disease, Key Laboratory of Surveillance and Early-warning on Infectious Disease, Chinese Center for Disease Control and Prevention, Beijing, China

Liza Lopez

Affiliation Institute of Environmental Science and Research, Wellington, New Zealand

Phuong Vu Mai Hoang

Affiliation National Institute of Hygiene and Epidemiology, Hanoi, Vietnam

Cláudio Maierovitch Pessanha Henriques

Affiliation Ministry of Health, Brasília, DF, Brazil

Maria Luisa Matute

Affiliation National Influenza Center, Ministry of Health, Tegucigalpa, Honduras

Alla Mironenko

Affiliation L.V.Gromashevsky Institute of Epidemiology and Infectious Diseases National Academy of Medical Science of Ukraine, Kiev, Ukraine

Brechla Moreno

Affiliation National Influenza Center, IC Gorgas, Panama City, Panama

Joshua A. Mott

Affiliation US Centers for Disease Control and Prevention, Nairobi, Kenya

Richard Njouom

Affiliation Service de Virologie, Centre Pasteur du Cameroun, Yaounde, Cameroon

Nurhayati

Affiliation US Naval Medical Research Unit No. 2, Jakarta, Indonesia

Akerke Ospanova

Affiliation Zonal Virology Laboratory, Astana Center of Sanitary Epidemiology Expertise, Astana, Kazakhstan

Rhonda Owen

Affiliation Vaccine Preventable Diseases Surveillance Section, Health Policy Protection Branch, Office of Health Protection, Department of Health, Woden, Australia

Richard Pebody

Affiliation Respiratory Diseases Department, Public Health England, Colindale, United Kingdom

Kate Pennington

Affiliation Vaccine Preventable Diseases Surveillance Section, Health Policy Protection Branch, Office of Health Protection, Department of Health, Woden, Australia

Simona Puzelli

Affiliation National Influenza Center, National Institute of Health, Rome, Italy

Mai thi Quynh Le

Affiliation National Institute of Hygiene and Epidemiology, Hanoi, Vietnam

Norosoa Harline Razanajatovo

Affiliation National Influenza Center, Virology Unit, Institut Pasteur of Madagascar, Antananarivo, Madagascar

Ana Rodrigues

Affiliation National Institute of Health, Epidemiology Department, Lisbon, Portugal

Juan Manuel Rudi

Affiliation Instituto Nacional de Enfermedades Respiratorias “Dr. Emilio Coni,” Santa Fe, Argentina

Raymond Tzer Pin Lin

Affiliation Communicable Diseases Division, Ministry of Health, Singapore, Singapore

Marietjie Venter

Affiliations Global Disease Detection, US-CDC, Pretoria, South Africa, Zoonoses Research Center, Department of Medical Virology, University of Pretoria, Pretoria, South Africa

Marie-Astrid Vernet

Affiliation Service de Virologie, Centre Pasteur du Cameroun, Yaounde, Cameroon

Sonam Wangchuk

Affiliation Public Health Laboratory, Department of Public Health, Ministry of Health, Thimphu, Bhutan

Juan Yang

Affiliation Division of Infectious Disease, Key Laboratory of Surveillance and Early-warning on Infectious Disease, Chinese Center for Disease Control and Prevention, Beijing, China

Hongjie Yu

Affiliation Division of Infectious Disease, Key Laboratory of Surveillance and Early-warning on Infectious Disease, Chinese Center for Disease Control and Prevention, Beijing, China

Maria Zambon

Affiliation Respiratory Virus Unit, Public Health England, Colindale, United Kingdom

François Schellevis

Affiliation Netherlands Institute for Health Services Research (NIVEL), Utrecht, The Netherlands

John Paget

Affiliation Netherlands Institute for Health Services Research (NIVEL), Utrecht, The Netherlands

Global Influenza B Study

Membership of the Global Influenza B Study Group is listed in the Acknowledgments.

Competing Interests

The Global Influenza B Study was supported by an unrestricted grant from Sanofi Pasteur; this does not alter the authors' adherence to PLOS ONE policies on sharing data and materials. The authors have no other potential competing interests to declare.

Author Contributions

Conceived and designed the experiments: SC JP FS MAC QSH. Performed the experiments: SC JP FS. Analyzed the data: SC JP. Contributed reagents/materials/analysis tools: WA SB A. Balmaseda A. Barakat A. Bella A. Bimohuen LB JB A. Bruno LC MAC AWC CC JC CD CdL DDM KD GOE RAF LF WAFA RG JMH OH QSH HAK LK HK GK JL ML LL PVMH CMPH MLM AM BM JAM RN Nurhayati AO RO RP KP SP MTQL NHR AR JMR RTPL MV MAV SW JY HY MZ. Wrote the paper: SC JP FS.