New South Wales has recorded 98 local cases of Covid-19 overnight - including 37 unlinked infections - as Premier Gladys Berejiklian warned Sydneysiders to stay at home to slow the spread of infections.
Of the newly-acquired cases, 20 were active in the community for their entire contagious period and another 17 for part of the time they were infectious.
In a worrying sign the city's outbreak of the highly-contagious Delta variant is still spiralling out of control, NSW Health said 37 of the cases have not yet been linked to known cases.
Ms Berejiklian said 67 infections - more than two-thirds of the new cases - were found in Sydney's south-west.