This is why they offered AUSMAT to Victoria a few weeks ago - and Victoria accepted. To control the aged care situation. To stop workers working at multiple aged care centres, and reduce the risks of spreading the virus. To organise them better. I have explained all of this in previous posts.
AUSMAT | NCCTRC
Unfortunately for Premier Andrews, the situation in Victoria hasn't been handled in the way that it has been handled in other states. They are now paying the price.
The good news is that their new cases have been significantly dropping over the last few days. Harm reduction is now starting to work for them. It takes a little while for all of the measures to start to have an effect.
They have also extended their lockdown by a few weeks. Which will be hard for the Victorian people, but is what needs to happen to continue to bring the numbers down. From what I read (somewhere) their R0 is now under R1.