Competing interests:: Bahaa Abu-Raya reports honoraria for participation in meetings from Sanofi, and is coinvestigator on studies funded by GSK, Pfizer, Merck, Moderna, Vaccitech, and Inventprise. Joanne Langley reports funding for clinical trials from GSK, Pfizer, Merck, Moderna, Sanofi, and Sequris, paid to Dalhousie University; consulting fees from GSK, Sanofi, Enanta, and Sequris, paid to departmental academic funds; and travel support from Sanofi, Enanta, and Sequris. She reports participation on a data safety monitoring board for a pneumococcal vaccine trial with Vaxcyte and the SNAP trial. She is medical advisor for the Nova Scotia Palivizumab for RSV Prevention Program and a member of a working group on influenza with the National Advisory Committee on Immunization. Pascal Lavoie is medical director of the British Columbia RSV Immunoprophylaxis Program and is employed by the Provincial Health Services Authority of British Columbia. He received honoraria for participating in an advisory board for Sanofi Canada. No other competing interests were declared.