Raina MacIntyre is Professor of Global Biosecurity and NHMRC Research Fellow. She heads the Biosecurity Program at the Kirby Institute, UNSW. Her vaccine expertise is in older adults and immunosuppressed people, and she has done several clinical trials of vaccines in adults and transplant patients. She is on the WHO COVID-19 Vaccine Composition Technical Advisory Group and the WHO SAGE Smallpox and mpox advisory group.