There are now seven confirmed cases of coronavirus in Australia with four in NSW, two in Victoria and one in Queensland.
Meanwhile, a Western Australian adult is being tested for the deadly coronavirus.
"Given the substantial lower number of cases in China outside Hubei province, we do not now recommend self-isolation for travellers from other parts of China are from other countries".
The Chinese tour group travelled from Wuhan, in China's central Hubei Province, via Singapore, into Melbourne on January 22.
Queensland's Chief Health Officer will provide more details at a media conference on Friday.
Passengers on a Tiger Air flight have been urged to contact health authorities after a man diagnosed with coronavirus travelled with the airline earlier this week.
But he said it was unlikely pre-symptomatic transmission of the disease would occur in Australia. "Four of them are well at this time, but we'll continue to monitor them". "All the evidence from China suggests that almost all of the cases are only infectious when they're symptomatics".
Worldwide cases of pre-symptomatic transmissions are being investigated in Germany and Japan. "That's the German case", Prof Murphy said.
"The most important thing, I think, here is for people to understand that this is a respiratory virus".
She said people sitting within two rows of the tour group would be asked to go into quarantine once Queensland Health authorities tracked them down.
There was also reports of a bus driver in Japan who transported passengers from Wuhan who may have contracted the virus.
Self-isolation means staying at home and not accepting visitors.
Queensland health minister Steven Miles confirmed the hotel was in the centre of Brisbane.
"The patient was not symptomatic whilst in Melbourne, however given recent evidence regarding potential of transmission in the 48 hours prior to symptom onset a precautionary approach is being undertaken", it said.
"Any child returning from the Hubei Provence or any teacher can not return to a school for 14 days since leaving Hubei Province", she said.
Returned travellers who have visited China, including Hong Kong, should not attend school, childcare or TAFE for 14 days after leaving China, including Hong Kong.
"A number of them are unwell and are being tested right now".