NSW recorded three new locally acquired cases of COVID-19 in the 24 hours to 8pm Saturday night.
It comes as residents of the northern zone of the Northern Beaches enjoyed their first day of freedom in weeks, with stay-at-home orders now at an end.
"Though the main threat has subsided, we are still mopping up ... it only takes one or two cases to get out of control," Premier Gladys Berejiklian said on Sunday.
"There are still remnants of the disease in the community."
Three cases were also recorded in returned travellers, with nearly 24,000 people coming forward to get tested in that time period.
Chief Health Officer Dr Kerry Chant was happy with the latest testing numbers, but said they would need to continue to see high testing numbers over the next fortnight to "mop up any unrecognised chains of transmission".
"We also asking people to be cautious about large gatherings and household events - hence the restrictions around the numbers of visitors that are permitted to houses each day," Dr Chant said on Sunday.
"These settings all prevent a major superspreading event."
Of the three locally acquired cases that were reported, one was a man from the southern part of the northern beaches linked to the Avalon cluster and is a close contact of a previously reported case.
This takes the total to 150 cases associated with the Avalon cluster.
The other two were a woman and a man in aged their 30s linked to the Berala cluster, and were close contacts of a previously reported case.
This brings the total to 23 cases now associated with the Berala cluster.
On Saturday night, NSW Health announced several new venues in Sydney's south-west and north-east that are associated with the latest locally acquired cases.
An extensive list of bus and train routes used by confirmed cases in Sydney's south-west and Inner West, were also announced.
Please check the NSW Government website: https://www.nsw.gov.au/covid-19/latest-news-and-updates and follow the health advice if you were at any of these locations at the times listed.
NSW Health urged people to continue to observe the restrictions in place for Greater Sydney and urged everyone to come forward for testing if even the mildest of symptoms that could signal COVID-19 develop.
There are more than 350 COVID-19 testing locations across NSW, many of which are open seven days a week. To find your nearest clinic visit https://www.nsw.gov.au/.../how-to-protect.../clinics or contact your GP.
NSW Health is treating 109 COVID-19 cases, none of whom are in intensive care.
Most cases (99 per cent) are being treated in non-acute, out-of-hospital care, including returned travellers in the Special Health Accommodation.
It comes as Queensland recorded no new cases on Sunday, though Brisbane remains locked down until at least 6pm on Monday but it won't affect the cricket.
Their lockdown is over a case of a highly transmissible strain of coronavirus from overseas, found in a hotel quarantine worker but is yet to result in another community case as of Sunday.
Their upcoming cricket test between Australia and India at the Gabba with 100 per cent capacity will still go ahead as planned from Friday January 15.
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