About the Authors

Anne Mosnier

amos@openrome.org (AM); enauleau@openrome.org (EN)

Affiliation Open Rome (Organize and Promote Epidemiological Network), Paris, France

Saverio Caini

Affiliation Open Rome (Organize and Promote Epidemiological Network), Paris, France

Isabelle Daviaud

Affiliation Open Rome (Organize and Promote Epidemiological Network), Paris, France

Elodie Nauleau

amos@openrome.org (AM); enauleau@openrome.org (EN)

Affiliation Open Rome (Organize and Promote Epidemiological Network), Paris, France

Tan Tai Bui

Affiliation Open Rome (Organize and Promote Epidemiological Network), Paris, France

Emmanuel Debost

Affiliation General Practitioner or Paediatrician, contributor of the GROG network, Paris, France

Bernard Bedouret

Affiliation General Practitioner or Paediatrician, contributor of the GROG network, Paris, France

Gérard Agius

Affiliation Laboratoire de Virologie, Centre Hospitalier Universitaire de Poitiers, Poitiers, France

Sylvie van der Werf

Affiliation Centre National de Référence des virus influenza, Génétique moléculaire des virus respiratoires, Institut Pasteur, CNRS UMR 3569, Université Paris Diderot Sorbonne Paris-Cité, Paris, France

Bruno Lina

Affiliation Centre National de Référence des virus influenza, CBPE, Hospices Civils de Lyon et Virpath, Université Claude Bernard Lyon, Lyon, France

Jean Marie Cohen

Affiliation Open Rome (Organize and Promote Epidemiological Network), Paris, France

GROG network

Membership of the GROG network is provided in the Acknowledgments.

Competing Interests

SC, ED, BB and GA declare having no conflicts of interest. ID, EN and TTB declare their institutions received grants from the study sponsor and from several pharmaceutical companies on matters relating to influenza surveillance and to the burden of illness due to influenza and its prevention. JMC and AM declare having received support for travel to meetings and their institutions received grants from the study sponsor and from several pharmaceutical companies on matters relating to influenza surveillance and to the burden of illness due to influenza and its prevention. BL received travel grants to attend meetings from GSK and Roche. He is a member of ESWI. SVDW has received consulting fees from Danone through her research unit. She is a member of ESWI. The IBVD study was funded by GSK Biologicals SA. There are no patents, products in development or marketed products to declare. This does not alter the authors' adherence to all the PLOS ONE policies on sharing data and materials, as detailed online in the guide for authors.

Author Contributions

Conceived and designed the experiments: JMC AM ID. Performed the experiments: JMC AM ID EN TTB. Analyzed the data: AM ID SC. Contributed reagents/materials/analysis tools: SVDW BL GA. Wrote the paper: SC JMC AM ID. Reread and approved the final version of the manuscript: JMC SC AM ID ED BB GA SVDW BL EN TTB.