Funding text 1: Funding: This research was funded by the European Union’s Horizon 2020 research and innovation programme - project EpiPose No 101003688 (MJ, JE), National Institute for Health Research - Health Protection Research Unit in Immunisation (MJ) and for Modelling Methodology (MJ, TJ, JE), the Economic and Social Research Council RCUK grant ES/P010873/1 (TJ), the UK Public Health Rapid Support Team (TJ), the Bill and Melinda Gates Foundation grant OPP1183986 (ESN) the Nakajima Foundation (AE), the Alan Turing Institute (AE) and the Wellcome Trust grant 210758/Z/18/Z (SA). The views expressed in this publication are those of the author(s) and not necessarily those of the NIHR, Public Health England or the UK Department of Health and Social Care.; Funding text 2: This research was funded by the European Union’s Horizon 2020 research and innovation programme - project EpiPose No 101003688 (MJ, JE), National Institute for Health Research - Health Protection Research Unit in Immunisation (MJ) and for Modelling Methodology (MJ, TJ, JE), the Economic and Social Research Council RCUK grant ES/P010873/1 (TJ), the UK Public Health Rapid Support Team (TJ), the Bill and Melinda Gates Foundation grant OPP1183986 (ESN) the Nakajima Foundation (AE), the Alan Turing Institute (AE) and the Wellcome Trust grant 210758/Z/18/Z (SA). The views expressed in this publication are those of the author(s) and not necessarily those of the NIHR, Public Health England or the UK Department of Health and Social Care.