South Australian Premier put his plans to re-open SA borders to Victoria on hold due to the recent spike of coronavirus cases in Victoria.

The State Government’s commitment comes as it prepares for new cases when international travellers return to Adelaide.

Premier Steven Marshall said the state would move toward a model of restricting travel from "identified hotspots" rather than blanket restrictions by state or territory.

"We will continue to closely monitor what is happening in Victoria but we do have confidence that they will be able to get on top of these clusters that are there at the moment."

Following a meeting of national cabinet, Mr Marshall said states had agreed to continue lifting restrictions while embarking on a "suppression" rather than "elimination" approach.

Victoria recorded over 75 new coronavirus cases yesterday — a double-digit increase for the 12th consecutive day.

Police Commissioner Grant Stevens says strict controls will remain in place at the Victorian border for as long as they are required.

"Vulnerable areas are going to be a challenge for us and that’s something we’ll be watching before we actually make that decision to lift all border restrictions," he said.

"If we’re starting to consider safe zones in different jurisdictions then we’ll have a mechanism to ask specific questions of people in relation to their movement around that safe zone."

Commissioner Stevens said those coming from interstate will need pre-approval online to cross the border as an essential traveller from next week.

Health Minister Stephen Wade said the state could expect new cases when about 300 returning Australians arrive in Adelaide this weekend.

"In terms of what we’re seeing interstate, about five to 10 per cent of travellers recently returned from the subcontinent have tested positive on their arrival in Australia," he said.

From Monday, social distancing will be reduced to one person per two square metres, down from the current restriction of one person per four square metres.

Mr Marshall said the measure would help boost the number of patrons at venues, allowing businesses to hire more staff.

"This is going to increase the capacity of many sectors in South Australia to re-employ people and get them back to work," he said.

"We know this represents approximately 50 per cent of the capacity of most venues."