Overview: It could be the most powerful weapon in the fight against COVID-19: A vaccine. So when will it be available? Who will get priority and how will it change the way Australians live, work and travel? Is the national strategy the right one? Joining Hamish to discuss these points and more are: Nick Coatsworth, Federal Government infectious diseases advisor; Sharon Lewin, Leading infectious diseases expert and Director of the Doherty Institute; Michelle Ananda-Rajah, Associate director, Monash Institute of Medical Engineering; and Tony Blakely, Epidemiologist, University of Melbourne.