Minister says easing of restrictions has resulted in 'the great NSW bust-out.'

Only one new coronavirus case was detected from 10,179 tests in NSW in the last 24-hour reporting period.

However, Health Minister Brad Hazzard cautioned that "we are all sitting ducks for this virus" following the relaxation of restrictions, which he said had led to "the great NSW bust-out".

Since the changes on Friday, playgrounds and cafes have been very busy and numbers at Westfield shopping centres continue to grow, with the reopening of Myer at Miranda an extra lure.

At the same time, more tests are being conducted in the shire with the opening of a drive-through clinic at Sutherland and GPs becoming more involved.

The new case detected in the last 24 hours was overseas-acquired and the person is in isolation in a hotel.

Mr Hazzard said the latest figures, on top of only three new confirmed cases from 9892 tests in the previous 24 hours, were "particularly positive".

However, people should remain on high alert, he cautioned.

"The issue is transmission," he said. "We are not sure where that may be occurring.

"Moving about Sydney this morning, and seeing and talking to folks across NSW, I think it's fair to say there has been, in a sense, the great NSW bust-out.

"People are rewarding themselves after many weeks of sacrifice, locking themselves inside. We we all deserve it, we have worked very hard at it.

"I don't want to dissuade people from enjoying a fantastic state and what at the moment is fantastic weather for this time of the year, but I also do want to remind people this virus is extremely dangerous and we are all, everyone of us, sitting ducks for this virus.

"We don't know where this virus might break out."

Mr Hazzard said, "We are still vulnerable and our great bust-out has to be tempered".

"When we go out, we have to exercise social distancing," he said.