1.First is the data available to Australian governments will be ahead of this;
2. The doubling time is out to 4 days, so it is heading in the desired direction; Please take note on the graph of the dotted lines. These are called confidence limits covering the range of expected results. If you have been following this you have noted this lines are growing apart ie., greater uncertainty which is reflecting the pressure being applied;
3. At this point in time I would expect in 10 days there to be at least 16,474 active cases and about 160 deaths. However, it could be a lot better than this as there is a lag time between restrictions and impacts.
As to other nations:
New Zealand had to really come down hard as it got away and has a doubling time of 2.4 days. They could go from 500 odd cases now to 19,000 in ten days. They are applying a lot of pressure to turn this around;
In the US doubling time 3.1 days, active cases 138000, in 10 days 1 to 1.7 million. They are applying insufficient pressure expect many tens of thousands of deaths in the coming weeks.
There are some models going around describing scenarios in terms of medical capacity. These are complex but I will have a crack at coming up with some possible scenarios.
Best Wishes
Truedogz
