There are now all sorts of different lockdowns in Victoria as the state's active caseload of coronavirus gets worse and worse.

The number of cases has more than doubled in the last week, and is showing no signs of slowing down.

Borders will be closed with NSW from midnight, a hard lockdown remains in place for residents in public housing towers and softer restrictions apply to people in hotspots.

But is it all enough? Or is just delaying the inevitable citywide lockdown?

On today’s show:

* Are the measures in Melbourne enough?

* Given Victoria's daily case count is higher than during the March peak will the whole of Melbourne go back to harder restrictions? And will school go back?

* What’s the latest understanding of COVID-19's case fatality rate?

And Norman and Tegan discuss the letter to the World Health Organisation, signed by more than 230 scientists, arguing that coronavirus is airborne. And also research in The Lancet which might indicate that we're worrying way too much about getting COVID-19 from surfaces.