You might have heard about so-called 'donut days' - days where zero cases of coronavirus are recorded.

To yesterday, Victoria has recorded three donut days in a row which is a huge relief for the state which peaked at 700 daily infections back in July and August.

But with the excitement of donut days, and now that they're becoming more common than not, there's always the risk that people will get comfortable with their new reality, and complacency could once again set in.

Also on today's show:

* I'm coming from the country to Sydney, how safe is public transportation?

And Norman and Tegan discuss a couple of studies about masks - one showing the difference between two cities in America: one with a mask mandate and one without. And also a study on masks and oxygen levels.

And are we getting closer to discovering how President Trump got coronavirus?