I'm not too worried about the extra 6 cases announced this arvo.
While it hasn't been confirmed yet, it would be a safe assumption it was the same bloke (the 81 year old who went to Argentina - case #1) who was at both the Greek (saturday night) and the Winery (Sunday arvo) (or if not the bloke, his daughter who was case #2).
If it was someone who caught it at the greek and then was already spreading it on Sunday afternoon, then I'd be worried, as that is meaning its cycling through in under 24 hours.
If its case 1 or 2, not worried. If its case 4 or 5 that's spreading it on Sunday arvo, then we'll have a heap of people who spread it everywhere on Monday and Tuesday before we locked down tuesday night.
Hopefully the Journo's are able to ask an intelligent question at tomorrow morning's conference and confirm which case it was that spread it around at the winery, that will let us know how worried we need to be.
Having said the above, even if it was case 4 or 5, that's bad, and we'll have a sh!tload of people that need to go into quarantine, however the process remains the same:
1) work out who has it,
2) find out where they went,
3) quarantine those that also went there, and test them, if positive, refer to step 1.
The above cycle only needs to run through the loop until you get to 6pm Tuesday night. They shouldn't be spreading it after 6pm Tuesday.
Even if they need to run through the above three steps for 100 people (currently at 12), they have already caught up to cases that caught it on Sunday afternoon. If they can keep up the same pace, it's only another 52 hours or so between Sunday afternoon's spreading event, and the Tuesday 6pm lockdown.
If we keep this pace, 52 hours after today's 6 which were known at about 11am today, gets us to roughly 3pm Friday. Absolutely no reason we can't have this wrapped up by 6pm on Tuesday.