1 Department of Mathematics, Imperial College London, London, UK.
2 The Vaccine Confidence Project, Department of Infectious Disease Epidemiology, London School of Hygiene and Tropical Medicine, London, UK. alex.defigueiredo@lshtm.ac.uk.
3 The Vaccine Confidence Project, Department of Infectious Disease Epidemiology, London School of Hygiene and Tropical Medicine, London, UK.
4 The Vaccine Confidence Project, Department of Infectious Disease Epidemiology, London School of Hygiene and Tropical Medicine, London, UK. heidi.larson@lshtm.ac.uk.
5 Department of Health Metrics and Evaluation, University of Washington, Seattle, WA, USA. heidi.larson@lshtm.ac.uk.
6 Centre for the Evaluation of Vaccination, Vaccine and Infectious Disease Institute, University of Antwerp, Antwerp, Belgium. heidi.larson@lshtm.ac.uk.