b) Number of international travellers is irrelevant given that the policy in Australia was to quarantine ALL visitors for 14 days. Same policy that the UK has now adopted and you can’t argue that they don’t have a lot of international travellers. Again it is simply bad policy.

c) Climate is not that different to many parts of the US right now. It’s not like it’s winter versus summer. Fairly mild temperatures in both countries right now.

Autrstial probably didn't have community spread of covid until Late Feb. But America had community spread in at least mid Jan--and probably earlier. But Australia locked down essentially when America did. If they can eradicate the disease, that's a huge win, but if they can't they are just delaying what happened in America.