Mr Weimar said locking down the Kings Park complex earlier would not have necessarily prevented more csases.
“It highlights how important the circuit breaker has been in terms of minimising movement,” he said.
“The recently identified people at Southbank and those in the last 10 days have had far fewer movements in the community, and therefore far less risk of spreading and transmission.
“Secondly, we always go through a process with any positive case, as we did with the Arcare staff member who was the first positive case in the community, around her movements, around those primary contacts.
“We did a testing blitz around her and her partner was identified.
“It was only when the second individual came forward symptomatic a few days ago that we identified it was a wider spread of that exposure site.”