Julie Leask is professor and social scientist in the University of Sydney, School of Public Health. Her research focuses the social aspects of vaccination, programs, policy, and risk communication. Professor Leask has qualifications in public health, nursing and midwifery. Her advisory and committee roles include WHO, UNICEF, the US President’s Cancer Panel, NHMRC, Australian Academy of Science, and governments. 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.”