Can we get back on top of COVID?

Australia is backsliding in the battle to suppress COVID-19, and the weekend brought more bad news. Greater Sydney and Darwin are both in lockdown, and there are new restrictions in place in Perth, Queensland, the ACT and regional NSW. All over Australia, everyone is nervously waiting to see where more cases pop up next. So how did it all unravel so fast? Today on The Signal, we ask what we're doing to bring the virus back under control, and whether it will work. Featured: Professor Nancy Baxter, Epidemiologist and Head, Melbourne School of Population and Global Health