We're joined by Professor Julie Leask AO, a social scientist and professor in the Sydney School of Public Health, Faculty of Medicine and Health, University of Sydney, where she co-leads the Social and Behavioural Insights in Immunisation (SABII) research group. Her research focuses on social and behavioural aspects of vaccination and prevention of infectious diseases. She is a member of Sydney Infectious Diseases Institute (Sydney ID), affiliate of the School of Nursing and Midwifery and visiting professorial fellow at the National Centre for Immunisation Research and Surveillance. She currently holds an NHMRC Investigator Leadership Fellowship.