The Tasmanian government has dismissed concerns raised by two Burnie GPs, that controls around the Spirit of Tasmania ferries might have allowed COVID-19 to pass into the community.
Tasmanian Premier Peter Gutwein said there were now more measures to protect the community.
"With the Victorian situation escalating, we have added additional protections and any Tasmanian returning from Victoria must now also quarantine for 14 days in a government-controlled hotel, and no Victorian is allowed to come to Tasmania, unless for exceptional circumstances approved by the State Controller."
Mr Gutwein outlined how TT-Line was carrying out controls.
"Crew are screened for health and must wear appropriate protection when performing duties. They remain on board and do not leave the ship in either Devonport or Melbourne for the full two weeks of their swing.
"There is minimal interaction with passengers and there is a full-time medic on board. Passengers are restricted to their cabins, where a food and care package is provided.
"Restaurants, bars, gaming areas and eateries on board are closed.
IN OTHER NEWS
"Only Tasmanians and essential travellers, pre-approved by the state controller, are permitted on board.
"Tasmania Police and Biosecurity Officers screen all passengers on arrival."
On Wednesday, GPs Dr Keith McArthur and Dr Emeka Okorafo voiced concerns about the possible spread from the mainland.
Dr McArthur said he would be 'extremely surprised' if COVID-19 weren't in the state, saying from his information, the ferries were an 'incubator box'.
A government spokesperson said there was no current evidence that COVID-19 was being transmitted in the community.
"Good levels of testing have been maintained in Tasmania since the last locally acquired case in early May.
"The uptake of testing across Tasmania is reviewed regularly. Testing is promoted and facilitated through fixed and mobile testing sites to ensure all Tasmanians know when and how to get tested."