Skoko, Paige https://orcid.org/0009-0001-3738-2976
Manna, Sam https://orcid.org/0000-0002-7694-9605
Boelsen, Laura K. https://orcid.org/0000-0002-2480-0753
Hinds, Jason
Lo, Stephanie W. https://orcid.org/0000-0002-2182-0222
Pell, Casey L. https://orcid.org/0000-0003-3883-2163
Ortika, Belinda D.
Higgins, Rachel A.
Bennett-Wood, Vicki
Hou, Hanwen
Tundev, Odgerel
Dunne, Eileen M. https://orcid.org/0000-0001-5542-0780
Nguyen, Cattram D. https://orcid.org/0000-0002-0599-8645
Russell, Fiona M.
Mulholland, E. Kim
Mungun, Tuya
Licciardi, Paul V. https://orcid.org/0000-0001-6086-6285
von Mollendorf, Claire https://orcid.org/0000-0003-0927-1731
Bentley, Stephen D. https://orcid.org/0000-0001-8094-3751
Satzke, Catherine https://orcid.org/0000-0003-3164-8849
Funding for this research was provided by:
Department of Health | National Health and Medical Research Council (GNT1196415, GNT2037205)
Article History
Received: 2 October 2025
Accepted: 21 April 2026
First Online: 15 May 2026
Competing interests
: C.vM., C.S., T.M., C.D.N. and E.K.M. were investigators on a Pfizer collaborative research project on the impact of paediatric PCV introduction on adults in Mongolia (2018–2022). C.S. is an investigator on a research collaboration funded by Pfizer on pneumonia in Australia outside of this work. C.S., C.D.N. and E.K.M. were investigators on a Merck Investigator Study Program grant funded by MSD outside this work. E.M.D. is currently employed by Pfizer. S.M., C.vM. and C.S. have received honoraria from Pfizer for presentations at symposia unrelated to this study. J.H. is co-founder and shareholder of BUGS Bioscience Ltd., a not-for-profit spin-out company of City St George’s, University of London. The declared funding bodies were not involved in the conceptualisation, study design, data collection, or the decision to publish the results. The other authors have no relevant conflicts of interest to declare.