South Australia posted a donut day yesterday recording zero new coronavirus cases.

The state is now under a severe lockdown for the next five days, with people only being allowed out under strict conditions.

But if there's fear of a major outbreak and the virus is supposedly moving very fast and is very active, why zero cases? And will SA be able to keep it up?

On today's show:

* Is 6 days lockdown in South Australia going to be long enough?

* Coronavirus fragments have been detected in wastewater from Benalla and Portland

* I got a negative coronavirus test, but it also told me that I had another virus. Is this common? What else are they testing for?