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Article History

Received: 10 December 2020

Accepted: 13 May 2022

First Online: 9 June 2022

Declarations

:

: Not applicable.

: Not applicable.

: No author received any direct payment from Sanofi Pasteur with regard to their contributions to this manuscript, but could receive expenses for attendance at expert meetings or conferences for the presentation of data from this study.OD, HB, IG, J-MG, and AR are employees of Sanofi Pasteur.TRdeF and OV are employees of CVA, Paris.MC has received grants from Sanofi Pasteur MSD for taking part to advisory boards, expert meetings, and for acting as a speaker and/or organizer of meetings/congresses.PC reports personal fees from Sanofi Pasteur outside the submitted work.SdeL is Director of the Royal College of General Practitioners Research and Surveillance Centre. SdeL has received research funding through his University from Astra Zeneca, GSK, Lilly, MSD, Novo Nordisk, and Takeda, and for advisory Boards for Sanofi and Seqirus; all outside the submitted work.GK is the Royal College of General Practitioners National Immunisation Lead, British Global and Travel Health Association President, Board Member of the European Scientific Group on Influenza (ESWI), and chairs the Pan-European Influenza Group RAISE [Raise Awareness of Influenza Strategies in Europe]; has participated in advisory boards or lectured at meetings organised by MSD, Sanofi Pasteur, AstraZeneca, GSK, Valneva, and Seqirus; and has lectured at meetings organised by ESWI and the NHS.AM has participated in advisory boards or lectured at meetings organised by Sanofi Pasteur and Mylan. She is member of the French GEIG scientific Committee. As an employee of Open Rome, she has been involved in flu epidemiological studies funded by Sanofi.ROL is Scientific Advisor at the National Influenza Centre, Valladolid, Spain and is a member of the RAISE Pan-European Influenza Group and of the Scientific Committee of seventh ESWI conference. He has participated in advisory boards or lectured at meetings held by Astra-Zeneca, Crucell, GSK, Novavax, Sanofi and Seqirus.JS reports personal fees from Sanofi Pasteur, MSD, Pfizer, GSK, and Seqirus outside the submitted work.PV reports grants from ANIOS, personal fees from Sanofi, personal fees from Pfizer, grants from Merck Sharpe & Dohme, personal fees from Biosciences, and personal fees from Astellas, all outside the submitted work.JW reports personal fees from Sanofi during the conduct of the study and outside the submitted work.EP, FA, FT, JP-B, and KW have nothing to disclose.