Incorrect - we have had outbreaks with 1000s of people infected - but as the post above you correctly mentioned - when that happened, we did an incredibly strict lock down.

For example, for ~3 months we had:

- 1 person could go grocery shopping once per day for 1 hour

- you could only go outside for a maximum of 1 hour per day for excervise only

- every single organisation (other than critical care locations) had their physical locations shut down

- everyone was mandated to wear masks outside of their residence

And a bunch more...

We had ~5 community cases identified in Brisbane recently and the entire city went into an instant hard lockdown for 3 days whilst contact tracers worked out the scale of the issue.

It has nothing to do with how many cases we have, but everything to do with how harshly and rapidly we prevent community interaction.