The death toll from the coronavirus has risen to 170 and there are now 7000 cases of the disease Chinese officials have confirmed, as Australia prepares facilities on Christmas Island for evacuees from Hubei province.

The new virus has now infected more people in China than were sickened during the 2002-03 SARS outbreak.

China Eastern Airlines cabin crew are seen wearing protective face masks at Brisbane International Airport on Wednesday. Credit:AAP

Seven people have been diagnosed in Australia across three states, with many more awaiting test results. However, deputy chief medical officer Professor Paul Kelly said evidence showed the virus seemed to be milder than other coronaviruses like SARS.

On Thursday afternoon, NSW chief health officer Kerry Chant said two of the state's four cases no longer had any signs or symptoms of the illness and they were discharged from hospital on Wednesday.