So what advice has Dan followed this time??
Nothing he could do, locked it down, but the fall out from Sydney sent too many back into Victoria and spread it there. Delta was only controllable with a few cases in the community, the Sydney removalists spread it to several locations in Victoria plus some others moving interstate and it was all over. Now its way ahead of what contact tracing can do and lockdown is just plugging holes in the failing dam until the vaccination rate gets up.