The Australian Grand Prix is expected to be cancelled if one of the eight Formula One crew members being tested for coronavirus returns a positive result.

Five more people were quarantined and tested in Melbourne on Thursday amid fears they may have the virus, following the three who took the same precaution a day earlier.

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Haas has four staff and the McLaren also confirmed one team member in quarantine awaiting results ahead of the grand prix, due to start with practice sessions on Friday.

Haas team principal Guenther Steiner says the two latest quarantined staff had reported feeling unwell.

“It’s four in total, one engineer and I think three mechanics,” Steiner said at the Albert Park circuit on Thursday.

“We should collect the results in the afternoon.

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Three team personnel, one from McLaren and two from Haas, have undergone testing for coronavirus. Credit: Getty

“At the moment we can cope ... the most impact for me is that I hope that they are well and this afternoon that they just have a cold and can come back and work tomorrow.”

The McLaren team was uncertain when it would receive results from tests on Wednesday on a staffer.

The latest possible cases came after Victoria’s chief health officer Brett Sutton warned that positive tests at Albert Park could stop the race from being held.

“If (the tests) turn up positive, we need to consider what it means for their close contacts and if they have a number of close contacts across a number of crews, then those individuals need to be quarantined,” Sutton told Melbourne radio station 3AW on Thursday.

“If that effectively shuts down the race, then so be it. We’ll make that call.”

Australian Grand Prix Corporation chief executive Andrew Westacott said on Monday there was “no chance” of a spectator ban at Albert Park.

And despite the coronavirus concerns, fans turned up on Thursday to watch practice and qualifying for lower-profile racing classes.

The Chinese Grand Prix, which was scheduled for April, has been postponed while the Bahrain GP, the second stop on the F1 calendar, has banned fans from attending the March 22 race.

But Sutton said there was little point in banning spectators at the Melbourne race.

Daniel Ricciardo’s rival teams have been tested for coronavirus ahead of Australian Grand Prix. Credit: Getty

“I don’t think crowds are the issue here,” he said.

“I think the segregation of (F1) crews from each other and also the crowd is really important but crowd gathering is like any other mass gathering.

“Three hundred thousand come every day to the city to work - that’s a mass gathering. Public transport is a mass gathering every day.”

- with AAP