CORONAVIRUS IN AUSTRALIA:
* Four cases have been confirmed in Australia: three in NSW and one in Victoria.
* Three men are isolated in hospital in Sydney, after two flew from the Chinese city of Wuhan and the third from Shenzhen.
* A Chinese man in his 50s was Australia's first confirmed case of the deadly infection, after arriving in Melbourne on a flight from Guangzhou on January 19.
* NSW Chief Health Officer Kerry Chant said it was a matter of when, not if, the virus would reach Australia.
* Eighteen people have been tested for coronavirus in NSW, 10 in Queensland, four in South Australia and one in Tasmania.
* The death toll in China has reached 41, with more than 1300 cases confirmed.
* Symptoms include fever, cough, sore throat, vomiting and difficulty breathing.
* Cases have also been confirmed across Thailand, Japan, South Korea, Hong Kong, Singapore, France and the United States.
* Australia has raised the travel alert level to "do not travel" for the city of Wuhan - the epicentre of the outbreak - and for the entire Hubei province.
* Passengers arriving in Australia on all flights from China are being stopped and provided with health information including what to do if they become unwell.
* Chief Medical Officer Brendan Murphy said unless people have contact with someone who is unwell and has come from that part of China, there is no need for concern.
Australian Associated Press