Acknowledgments
Akkodis Belgium (c/o GSK) provided medical writing support (Timea Kiss) and manuscript coordination services.
Declaration of interest
KB Oh, TM Doherty and V Vetter are employees of GSK and hold shares in GSK as part of their employee remuneration, and they have no non-financial competing interest to declare. P Bonanni declares payment and support from GSK, MSD, Pfizer, Seqirus, Astra Zeneca, Janssen, Sanofi Pasteur and Moderna. The authors have no other relevant affiliations or financial involvement with any organization or entity with a financial interest in or financial conflict with the subject matter or material discussed in the manuscript apart from those disclosed.