However, there is a silver lining for students kept home from school due to interstate holidays - they can return to classes next week.

On Friday Premier Peter Gutwein said it looked as if NSW would be shut for some time, and Tasmania was also keeping an eye on Queensland after it recorded one confirmed case of the virus.

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"As we know Covid-19 continues to cause challenges across Australia. We have three states in lockdown in a bid to limit the spread of the virus. I know many Tasmanians have family in New South Wales, Victoria and South Australia. My thoughts are with them as they stay home to save lives," he said.

"Encouragingly South Australia recorded just once case of COVID today.

"However, New South Wales continues to deal with a very grave situation, reporting 136 new cases with 53 cases infectious in the community, which signals that this may go on for some time.

"As a consequence our border restrictions will remain unchanged, meaning no-one from those states will be able to enter Tasmania without being approved by the deputy state controller."

READ MORE: All the lockdown and border restrictions across Australia

Mr Gutwein gave students who travelled to Victoria during school holidays the green light to return to classes on Monday, and those who were in South Australia can return on Tuesday.

He thanked all students and teachers that were affected by the school restrictions.

"For travellers from Victoria who are not in quarantine and not attending school as a result of needing to wear a mask, the Tasmanian government now advises that from Monday July 26, staff and students can attend their school," he said.

"However, we will continue to ask travellers from South Australia, who returned on or around July 8, until at least Tuesday next week unless the 14 day time period has passed since they were in South Australia.

"A further update will be provided on Monday."

The lifting of the school restrictions comes as the New Zealand government shuts its doors to the trans-Tasman travel arrangement, with Air New Zealand leaving two flights open, this Sunday and next Thursday - to allow travellers to return home.

"As a result of the COVID situation in Australia, unfortunately the New Zealand government has suspending the travel bubble for a period of eight weeks.

"It is understood that Air New Zealand will work to provide its regular scheduled service between Hobart and Auckland on Sunday and Thursday to enable Tasmanians and New Zealanders to return home respectively."

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