NSW has recorded no unknown COVID-19 cases overnight.
Premier Gladys Berejiklian announced the good news at a press conference on Wednesday where she also flagged changes to the NSW-Victorian border restrictions.
NSW recorded 10 new coronavirus cases in the 24 hours to 8pm.
One of the state's previously reported cases has also been excluded after further investigations, bringing the total number of cases in NSW to 3996.
Of the 10 new cases, six were overseas travellers in hotel quarantine and four were locally acquired and linked to a known case or cluster.
Three of the new cases are linked to a staff member from Concord Emergency Department.
They include a student at Blue Mountains Grammar School who attended school while infectious late last week, a household contact of the above case who did not attend school while infectious, and a close contact of the above student who is not at school. Contact tracing is underway.
Blue Mountains Grammar School senior school (years 10, 11, 12) has moved to online learning until after the school holidays.
In NSW, five of the 92 COVID-19 cases are in intensive care, three of whom are being ventilated. Eighty-eight per cent of cases being treated by NSW Health are in non-acute, out-of-hospital care.
There were 19,566 people tested in the 24-hour reporting period, compared with 8835 in the previous 24 hours.
NSW Health is urging people with mild symptoms to continue to get tested, especially with upcoming school holidays where people will be travelling around state.
Easing of border restrictions
The Premier said that easing restrictions in Victoria meant the border closure public orders could be changed.
"Now restrictions have been eased in regional Victoria, we are similarly doing that for our border communities to have consistency," she said.
"So whatever you can do in regional Victoria you can do in those [border] communities.
"We're also increasing the number of towns, I think around Shepparton, that will be included in the border community and we will provide hundred of exemptions for sheerer and harvesters to make sure critical ag workers are getting across the border."
Ms Berejiklian said the amended public health orders which would allow the change were currently with the NSW Health Minister Brad Hazzard and should be signed today or tomorrow.
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