[russellw]

It's also worth noting that the NT has now had 20 days without a new case and SA has had 4. The latter isn't enough given the ACT had 6 straight days in mid-April before another case and then 3 straight days last week before another case.

It actually begs the question what that number should be. It's not a question on the mind of too many countries yet when that are mostly still recording hundreds and even thousands of new cases a day so we are (AU/NZ) likely to be a bit of a litmus test for the rest of the world.

In my mind, it would be no new cases for at least one full incubation cycle but then whose incubation period do you use? The WHO says it's 10-14 days; the US CDC says 14-28 days while Australia seems to have no agreed idea as to what it is.