National Institute for Public Health and the Environment (RIVM) - Centre for Infectious Disease Control, University of Oxford - Oxford Vaccine Group, University of Turku - Institute of Biomedicine, Microbiology, Virology and Immunology, National Institute for Public Health and the Environment (RIVM) - Centre for Infectious Disease Control, National Institute for Public Health and the Environment (RIVM) - Centre for Infectious Disease Control, Spaarne Gasthuis Academy, National Institute for Public Health and the Environment (RIVM) - Centre for Infectious Disease Control, University of Oxford - Centre for Vaccinology and Tropical Medicine, University of Turku - Institute of Biomedicine, Microbiology, Virology and Immunology, University of Turku - Institute of Biomedicine, Microbiology, Virology and Immunology, National Institute for Public Health and the Environment (RIVM) - Centre for Infectious Disease Control, University of Oxford - Department of Paediatrics, University of Turku - Institute of Biomedicine, Microbiology, Virology and Immunology and National Institute for Public Health and the Environment (RIVM) - Centre for Infectious Disease Control