The clinical trial results are in for another coronavirus vaccine, this one made by the company Novavax, and at first glance they look really good. We say first glance because the results have not yet been published in a peer-reviewed journal, and are from the company's press release. They show the shot is very effective against COVID-19 and also shows promise for some of the more concerning variants we're up against. So on today's Coronacast, what could this mean for Australia's vaccine rollout and might Novavax be able to give the campaign a much needed shot in the arm. Also on today's show: * What has the medical community's reaction been to last week's death of a 52-year-old woman who'd received the AstraZeneca vaccine? * Worries about the spread of the Delta variant in the UK delay complete reopening * Canada's vaccine rollout surges ahead