Learning to love face masks

Face masks are the latest tool being recommended in the fight against COVID-19. Wearing a face mask in certain circumstances is now the official advice in Victoria, and the WHO updated its own guidelines on them only late last week. It's new territory for Australians, and there's some resistance to face masks in the community. So how much does wearing a mask actually help? And have we left it too late to start now? Today on The Signal, we look at the shifting official advice on wearing a face mask, from actively advising against wearing them to, in some places, fining anyone who won't. Featured: Professor Lidia Morawska, School of Earth and Atmospheric Sciences, Queensland University of Technology, Brisbane