What we still don't know about the vaccine announcement (but it's ok to be excited!)
What's That Rash? - A podcast by ABC listen - Tuesdays

The drug company Pfizer has announced its coronavirus vaccine has 90 per cent efficacy against COVID-19. It seems like exciting news, especially as it's one of the four vaccines the Australian Government has secured a deal to access if it proves safe and effective. But Pfizer haven't provided much in the way of data to explain their claims -- just a press release so far. So exactly how promising is this news? And what does all the scientific words like "90 per cent efficacy" actually mean?