Helen is also a Vaccinologist, Director of the Vaccine Datalink and Research Group (VADAR), Associate Professor, and undergraduate and post-graduate Lecturer in the School of Population Health at Waipapa Taumata Rau, University of Auckland. She is a media spokesperson on vaccines and vaccination, and a science communicator.
Helen has been involved in immunisation-related research in New Zealand since 1988, including clinical, social science, epidemiological and health systems. Her main research areas are vaccine safety and vaccine effectiveness. She has been the Chair of the World Health Organization Global Advisory Committee on Vaccine Safety (GACVS) and an elected member of the International Brighton Collaboration Science Board.