On Friday, Greater Brisbane was plunged into lockdown after a worker at a quarantine hotel tested positive to the so-called UK strain of coronavirus. But no other cases emerged during the three-day lockdown, and the region opened up again last night.

So what was the point of this lockdown? Was it an overreaction to a single case? Or, given that we know the virus can take up to 14 days to incubate, was it not long enough?

Dr Norman Swan and Tegan Taylor are back for 2021 to answer these questions on today's Coronacast.