Julie Leask AO is professor and social scientist in the University of Sydney, School of Public Health where co-leads the Social and Behavioural Insights in Immunisation research group. Her research focuses the social aspects of vaccination, programs, policy, and risk communication. Professor Leask has qualifications in public health, nursing and midwifery and one of her early roles was setting up a health promotion program for pregnant and parenting adolescents in Sydney. She is member of the Sydney Infectious Diseases Institute and visiting fellow at the National Centre for Immunisation Research and Surveillance. She was appointed Officer of the Order of Australia in 2024 “for distinguished service to health and medical research, to policy advice, and to enhancing community understanding of immunisation.

Professor Marshall AM is a clinician researcher and NHMRC Investigator L2 Fellow. She is a Consultant and Professor in Vaccinology in the College of Health and Clinical Research Director, Women’s and Children’s Health Network. Professor Marshall is Medical Director of the Vaccinology and Immunology Research Trials Unit, at the Women’s and Children’s Hospital, and is the Research Leader, Vaccines and Infectious Diseases Group in the Robinson Research Institute where she leads a team of 22 researchers. Professor Marshall leads the NHMRC Centre of Research Excellence in Neisseria Disease Control and was awarded the Eureka Infectious diseases prize in 2025. She was the 2023 South Australian Scientist of the Year and the 2022 SA Australian of the Year and SA Woman of the Year. In 2022 she was awarded Member of the Order of Australia and is a Fellow of the Academy of Health and Medical Sciences.

Dr Sonya Ennis is the Associate Director of Immunisation at NSW Health, a role she has held since 2018. She began her career as a Registered Nurse, specialising in Intensive Care, before becoming an Authorised Nurse Immuniser. Her commitment to immunisation policy and practice led her to the NSW Health Immunisation Unit, where she served for many years as a Senior Policy Analyst. In this role, she contributed to statewide immunisation strategies, program development, and disease prevention initiatives. Sonya completed a Master of Public Health in 2008 and a Professional Doctorate of Public Health in 2018, focusing her research on measles and pertussis control among vulnerable populations. Sonya is also a member of the Australian Technical Advisory Group on Immunisation (ATAGI).

Professor Margie Danchin is a paediatrician, vaccinologist and Dame Kate Campbell Fellow at the Royal Children’s Hospital, University of Melbourne and Murdoch Children’s Research Institute and Associate Dean International for the Faculty of Medicine, Dentistry and Health Sciences, University of Melbourne. As leader of both the Vaccine Uptake and Clinical trials Group at MCRI, her research focuses on improving child health and vaccine effectiveness, confidence and uptake in Australia, the Asia Pacific Region and globally. She is a member of the Australian Technical Advisory Group on Immunisation, works closely with DFAT to provide technical immunisation support for the region and her research has influenced immunisation policy and practice in Australia and globally.

Brittany Wilson is a Psychology and Public Health graduate from the University of New South Wales. She has experience across research, policy and community-based programs, with a strong focus on immunisation and health equity. She has worked in public health research and policy settings, including at the National Centre for Immunisation Research and Surveillance. Brittany's work is grounded in a commitment to self-determination and culturally safe approaches to health and wellbeing.