Border closures to Victoria 'absolute last resort', NSW Premier says

New South Wales will remain open to Victoria and will only close its borders as an "absolute last resort", Premier Gladys Berejiklian has told Today.

Ms Berejkilian has confirmed there would be no changes to the current travel arrangements between the two states despite a Victorian hotel quarantine worker testing positive to COVID-19 on Wednesday evening.   

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"The last time and the only time we closed the border to Victoria was when they had in excess of 150 cases a day," she said.

"At this stage while yes it's always concerning when the virus gets out of the quarantine system … we are yet to see any data the virus circulating in the community and NSW always likes to see the facts and the scene and get expert advice.

"Now that could change … but I've not received any advice that there is confirmed cases outside the ones that have already been identified in both Victoria and WA."

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So far, 15 of the close contacts linked to the Victorian quarantine case have tested negative to the virus, with more test results expected today.

Nearly 600 Australian Open players and support staff at the Grand Hyatt Hotel remain in isolation awaiting test results but the tournament is set to go ahead as planned.

South Australia hit pause on plans to ease travel restrictions with Victoria with any interstate arrivals now required to self-quarantine for 14 days and undergo a test on day 11.

NSW has recorded 19 days of zero locally acquired cases of COVID-19 with restrictions set to ease next week pending a continuation of low case numbers.