Possibly related. It looks like it started with quarantine staff not complying with infection strategies (allegedly sleeping with people in quarantine - presumably without at least one form of protection
) and then doing things like car sharing with other staff on the way to work plus other breeches of protocols. The rumors are also that 2 large interrelated family clusters of infection resulted from big Eid celebrations (far bigger than allowed at the time) and these have spread including into the tower blocks. I'm assuming that winter, the cramped conditions in the blocks and that many of the residents don't have English as a first language, so haven't been as well informed about preventing infection, have been contributing factors. It is assumed that there are connections between these clusters as the government said they thought most of the infections came from a single individual originally.
Some right wing idiot tried to blame it on Somalians which the government denied but you get the impression the government of Victoria might be trying to avoid ethnic/religious scapegoating i.e. there may be come truth in the rumors. All we need is more idiocy so hopefully it will all turn out to be rubbish.