A second case of the potentially deadly coronavirus has been confirmed in Victoria, while health authorities in Queensland have confirmed the state's first, bringing the number of cases nationally to seven.

Key points: The latest case, a Victorian resident in his 60s, is in isolation at home

The latest case, a Victorian resident in his 60s, is in isolation at home Federal health authorities say anyone who has returned from Hubei province should isolate themselves for 14 days

Federal health authorities say anyone who has returned from Hubei province should isolate themselves for 14 days China's women's soccer team is being quarantined in a Brisbane hotel

Victoria's chief health officer Brett Sutton said the state's second case was a resident aged in his 60s who became unwell on January 23.

The man had travelled to Wuhan City in Hubei province and first started showing symptoms more than two days after returning to Australia.

The announcement came shortly before Queensland's chief health officer, Jeannette Young, confirmed the first case of the illness in the Sunshine State.

"A 44-year-old Chinese national, who is currently isolated in the Gold Coast University Hospital, has been confirmed to have novel coronavirus," Dr Young said in a statement on Wednesday night.

"The man, who is from the city of Wuhan (Hubei province), is stable."

Queensland health officials have also revealed the Chinese women's national soccer team is being quarantined in a Brisbane hotel over concerns about the possible spread of the virus.

The news of the new cases came as federal health authorities asked all people who had had any contact with a confirmed case of coronavirus to isolate themselves in their homes for 14 days.

Limited cases where patients are asymptomatic

The Australian Health Protection Principal Committee (AHPPC) now wants all passengers who have returned from Hubei to isolate themselves for a fortnight.

In a statement, the AHPCC said it was aware of very recent cases of novel coronavirus who are asymptomatic or minimally symptomatic and reports of one case of probable transmission from a pre-symptomatic case to other people, two days prior to the onset of symptoms.

However, it said data was limited and it believed that most infections were transmitted by people with symptomatic disease.

The latest Victorian case was assessed at Melbourne's Monash Medical Centre after he first went to his general practitioner.

Dr Sutton said the man had since returned home, where he and his family were now in isolation and being monitored.

While some have exhibited symptoms, none have returned a positive test yet.

Two of the family members are children who have been excluded from school.

"The man was mostly at home and had isolated himself when unwell but he had gone out to a restaurant called The House of Delight for a short period of time," Dr Sutton said.

The man attended the Glen Waverley restaurant between 5:30pm and 7:00pm on Sunday.

"That restaurant has been followed up with and those who were there at the same time, whose contact details we have, we are following up with," Dr Sutton said.

"But obviously that restaurant is OK to go to now. People don't need to avoid that area or indeed anywhere else people have been, even if infectious at the time."

Anyone who was at the restaurant at the time should be aware of symptoms, and contact 1300 651 160 for advice.

Space to play or pause, M to mute, left and right arrows to seek, up and down arrows for volume. Watch Duration: 47 seconds 47 s Health authorities say Wuhan & Hubei visitors should self-isolate.

Cases now in three states

Victoria recorded its first case of the novel coronavirus on Saturday.

That case, a man in his 50s, remains in isolation in the Monash Medical Centre in a stable condition.

The latest diagnoses brings the total number of confirmed coronavirus cases in Australia to seven: four in New South Wales, two in Victoria and one in Queensland.

NSW Health have confirmed the number of people in that state under investigation for the virus has jumped from six to 16.

Dr Sutton said the results of tests on 14 more Victorians were still pending while 61 people who were initially suspected of having the virus had come back with negative tests.

He said the total number of people coming to Australia who had recently been to Wuhan was unclear.

"We can't know for sure those individuals who might have started their journey in Wuhan," he said.

"We will only know the number of people who are on flights from China on a daily basis."

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A Victorian Health Department media release said there was no current evidence that passengers or crew on the flight that the man took to return to Melbourne are at risk.

Victorians and visitors returning from Hubei province or other locations in China with cases have been advised to closely monitor their health.

Anyone who develops symptoms of fever and breathing difficulty or cough within 14 days of travel to Hubei province or who has had contact with a confirmed case should seek medical help immediately, providing information about their travel history.

University delays exams

Confirmation of the latest cases comes as Monash University postpones exams that were scheduled to start on February 3.

The university, which is Australia's largest by student numbers, said it was exploring alternative assessment options and would write to affected students.

Meanwhile, independent school Caulfield Grammar has suspended its program for Year 9s in the Chinese city of Nanjing until further notice.

Another Melbourne school, St Leonard's College in the bayside suburb of Brighton, has delayed a planned Year 9 trip to China from March until October.