NSW is expected to report more than two infections of coronavirus in its next update, as the colossal task of contact tracing thousands of people who visited a western Sydney bottle shop continues.
The health department on Monday flagged it had identified two further cases of local transmission after the cut-off time for reporting cases at 8pm on Sunday night.
Those will be included in Tuesday's numbers, which will be more than two, Acting Premier John Barilaro said.
"We've identified the two that we announced yesterday. There will be more than the two," he told Nine Network on Tuesday, ahead of an 11am coronavirus update.
"But it's a reasonable number, which I'm very confident with."
Authorities are still pleading with residents in Sydney's west to get tested for COVID-19 in greater numbers as a cluster in the region continues to grow.
NSW recorded zero new locally-acquired coronavirus cases for the first time in almost three weeks, in the 24 hours to 8pm on Sunday.
Most people who dropped by the BWS over the Christmas period are considered close contacts who must self-isolate for 14 days. This health order is believed to apply to thousands of people.
Mr Barilaro admitted on Monday contact tracing at the BWS was a colossal task, as QR codes are not mandatory at bottle shops.
Some 22,275 people sought COVID-19 testing in the 24 hours to 8pm on Sunday but Mr Barilaro said that number was too low.
He implored western Sydney residents to be swabbed if they have the slightest of symptoms, even if they have been tested previously.
The government wants to see 30,000 to 50,000 tests each day.
While Tuesday's numbers are expected to show a lift in the number of people getting tested, compared to Monday, it's still likely to fall short of what the government wants to see.
NSW Health late on Monday issued updated alerts for a supermarket and an RSL club, both in Sydney's west.
Anyone who went to Woolworths at Berala between 20 December to 31 December should get tested immediately and isolate until their results come back.
Anyone who was in the gaming area of the Earlwood Bardwell Park RSL for more than an hour between 8.52pm and 11.30pm on December 28 is now considered a close contact of an infected person and must also get tested.
There are also alerts in place for other western Sydney venues including Auburn's Reading Cinema and Woolworths and OKS Beauty and Hair in Lidcombe.
Sydney's new mask regime came into force on Monday, with police able to issue $200 fines to those not wearing masks in most indoor settings.
Police had issued no fines by Monday afternoon.
The northern part of the Northern Beaches peninsula, where there's a cluster of 148 infected people, will remain under stay-at-home orders until at least Saturday.
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