Tasmania would not be able to easily close its borders if the coronavirus worsens, a constitutional expert says.
Clark independent MHA Madeleine Ogilvie has called on the state government to ramp-up its border control measures.
However, Health Minister Sarah Courtney said there was no need for Tasmania to close its borders at this stage.
"However this is an evolving situation and we will continue to make sure we are doing the right thing to protect Tasmanians," Ms Courtney said.
Public Health director Mark Veitch said closing the border into Tasmania would be a socially disruptive measure which would not necessarily reduce infections as most Australian cases originated overseas.
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Professor George Williams AO, the dean of law at the University of New South Wales said under section 92 of the Australian Constitution trade and "intercourse" within the commonwealth had to be free.
The Constitution says:... "trade, commerce, and intercourse among the States, whether by means of internal carriage or ocean navigation, shall be absolutely free."
Professor Williams said intercourse referred to movement between states.
"There would be a major constitutional barrier to Tasmania closing its borders," he said.
"There has to be free movement between states and you can't arbitrarily stop it without very compelling reasons."
Professor Williams said if either the Tasmanian of Australian Government tried to close the borders there would most likely be a challenge in the High Court.
"It would have to be recommended in the interests of people's health as part of the coronavirus pandemic," he said.
"I don't think it (coronavirus) has a lot to do with state borders, it's not clear how it would help."
Meanwhile, Ms Ogilvie said although airports and ports operate under federal jurisdiction, the government should pick up the phone to the Prime Minister to seek permission to implement stronger measures at Tasmania's borders.
She said Tasmania should follow the lead of island nation Singapore.
"In Singapore, which is arguably one of the most exposed countries due to it being an international travel hub, cases have been kept relatively low due to an aggressive prevention and detection regime," Ms Ogilvie said.
"For anyone who has travelled interstate recently, it is perplexing that you are checked for fruit and vegetables by a sniffer dog at the airport but there are no precautions at all as to whether you might be infected."
Ms Ogilvie said measures needed to be put in the place at airport and ports, including the Spirit of Tasmania terminal in Devonport.
"While they would no doubt be expensive, surely prevention is better than the cure?
"Imagine the benefit to our state of a situation where we were relatively virus-free compared to even the rest of Australia."
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