It might come down to all Australians (that is, in all Australian States including island Tasmania) not crossing each other's borders to help stop/slow down the rate of infection until the all clear is given.
It is important to remember that we are all in this together, and we are all responsible for doing the right thing, and doing the best we can to help each other. If that means staying put for the duration, so be it.
Australia does not have a dual country border, separating two very different countries.
I have no idea of how it might work. There are borders that exist whether there are towns on/near them or not. All people should and could do is act with appropriate behaviour under very difficult circumstances and do everything they can to be part of the solution, not a part of the problem.
