The latest science on the Omicron variant

Omicron is now the dominant variant of Covid-19 in Australia and since its emergence late last year scientists and governments have been racing to learn more about it. So what do we know about how Omicron impacts the human body? And how effective are public health measures like masks, testing and vaccines against it?Science writer Donna Lu speaks to Laura Murphy-Oates about the latest data, studies and health advice on the variant