Katie Flanagan is a world-renowned clinician scientist with long-standing expertise in studying the immunology of infectious diseases and vaccination. She is a Senior Staff Specialist in Infectious Diseases at Westmead Hospital, Clinical Professor at the University of Tasmania and Adjunct Professor in Immunology at RMIT University in Melbourne. She has led multiple clinical trials of vaccination in Africa and Australia and is a global expert on sex differences in immunity and the broad immunomodulatory effects of vaccination. Her current research focuses on applying systems biology techniques (e.g., transcriptomics, epigenetics, metabolomics, microbiomics) to study human responses to vaccination. She has held many national leadership roles including being past President of the Australasian Society for Infectious Diseases (ASID) and current Co-Chair of the Australian Technical Advisory Group on Immunisation (ATAGI).