I think this self isolate 14 days is failing as the government or state authority can’t control the movement of those supposed to be isolated people.

In Hong Kong , people arriving from overseas who are subject to the 14 days isolation have to wear smart wristbands so that their movement can be tracked, more than 10,000 bands have already been activated. Many returning from higher risks area are being quarantined in government provided buildings , apartments and hotels. And yet their number of infected cases are still rising to 256 since all those overseas students are coming home !

What do we have in terms of control movement and quarantine facilities ? And we already have 785 and 392 in NSW alone in like a week.