The NSW premier has credited the hotel quarantine system in place for returned travellers with keeping the community safe during the COVID-19 crisis.
Gladys Berejiklian on Monday said infection rates in returned travellers have been high, with up to four per cent testing positive to COVID-19.
"It's way too soon to think about changing quarantine," she told reporters.
"That's something we've done which I believe has kept the community safe and that should continue in the foreseeable future because the risk is there."
The premier also flagged she was open to using the hotel quarantine system to get international students back into NSW universities, but insisted there would be no shortening of the 14-day quarantine.
She reiterated her concerns about a potential second wave of infections and an increase in community transmission cases as restrictions are eased.
"The virus is scarily contagious; it's deadly," she said.
"Whilst we are doing really well, incredibly well, it won't last if people relax and if people don't stick to the rules."
In the latest easing of COVID-19 restrictions in NSW, the 50-person limit on indoor venues will be scrapped from July 1.
Pubs and restaurants are among venues which will instead be guided by the 'one person per four square metres' rule, with the same change also applying to funeral attendees and venues.
Outdoor cultural and sporting venues with seating of up to 40,000 will be allowed to hold 25 per cent of their capacity from July 1.
Meanwhile, health authorities continue to probe how a teacher at Laguna Street Public School in southern Sydney became infected with COVID-19.
All students at the primary school have been deemed close contacts and have been told to self-isolate. The school will stop on-site learning until June 24.
The teacher was one of nine new virus cases reported in NSW on Sunday, while three new cases were reported on Monday from 7200 tests.
Of the three new cases, two are returned travellers in hotel quarantine and one is an Illawarra man in his 20s for whom the source of infection is unknown.
To date, the state has recorded 3131 cases of COVID-19.
People in Australia must stay at least 1.5 metres away from others. Check your state’s restrictions on gathering limits.
Testing for coronavirus is now widely available across Australia. If you are experiencing cold or flu symptoms, arrange a test by calling your doctor or contact the Coronavirus Health Information Hotline on 1800 020 080.
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