NSW has recorded 35 new local COVID-19 cases, including two more aged care residents in a northwest Sydney nursing home and a student at an eastern Sydney primary school.
Premier Gladys Berejiklian says 11 of the 35 cases in the 24 hours to 8pm on Sunday were out in the community during part or all of their infectious period while 24 were in isolation for the entire period they were infectious.
"NSW Health is obviously more concerned with the cases that were in the community during their infectious period for the entire time that we understand they were infectious," Ms Berejiklian told reporters on Monday.
"That is what health will be monitoring in the next few days."
"I know everybody is keen to know what is going to happen beyond Friday's lockdown, as am I, but what I can tell you with certainty is that the next couple of days will be absolutely critical," she said.
There have now been 312 local COVID-19 cases since June 16, when the Bondi cluster first emerged.
Among the new cases announced on Monday were two additional cases at SummitCare Baulkham Hills, both women in their 70s, one of whom was not vaccinated.
There were also five new cases connected to flight VA524 from Gold Coast to Sydney, on which an infected air crew member worked, and a student at Rose Bay Public School in Sydney's east was also dianosed with the virus.
Staff and students - who are on school holidays - have been told to self-isolate until they receive further advice, with school due to resume on Tuesday next week.
NSW Health has issued another ten COVID alerts for venues across Sydney including a Coles in Maroubra and a Woolworths in Hillsdale, both in Sydney's east.
Alerts have also been issued for numerous bus and train routes around Sydney.