Melbourne's emergence from a gruelling, months-long lockdown may be delayed again - as the rate of new coronavirus cases has stayed stubbornly above the levels set to trigger the relaxation of restrictions.
The 14-day rolling average of new daily cases rose to 9.5 during the weekend, and there are ten cases of the virus where no source can be found.
Those figures need to dip below a fourteen-day average of five cases, with fewer than five mystery cases over the same period.
That's led the Victorian premier Daniel Andrews to signal that some restrictions might not be eased this Sunday, as originally hoped.
Professor Tony Blakely is an epidemiologist and speaks to Corin Dann from Melbourne.
