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Article History

Received: 3 May 2021

Accepted: 3 November 2021

First Online: 29 November 2021

Declarations

:

: Following exchanges with editorial support at BMC, data from interviews performed prior to initiating this manuscript were removed given the absence of ethics committee review. The NHS Health Research Authority decision tool was initially used for this manuscript and suggested that an NHS Research Ethics Committees review was not needed for this study. However, BMC Public Health requires an ethics committee approval for interview data to be included. Removing the interviews does not significantly alter the results or discussion, as the data and knowledge were primarily collected through a combination of scientific literature review and desk research.

: Not applicable.

: No author received any direct payment from Sanofi Pasteur with regards to their contributions to this manuscript but could have received expenses for the preliminary input collection and conference attendance for the presentation of data and results from this study.CK and FB are employees of Sanofi Pasteur and may hold shares or stock options in the company.TB, TRdeF and OV are employees of Corporate Value Associates (CVA). TB, TRdeF and OV report consultancy fees paid to CVA by Sanofi Pasteur, during the conduct of the study; and outside the submitted work.CEJ reports personal fees from Sanofi Pasteur, during the conduct of the study; personal fees from MSD, personal fees from Pfizer, outside the submitted work.MGS reports personal fees from GSK, outside the submitted work.ICE and LT have no conflicts of interest to disclose.