NSW Health says it will not be disclosing the hospital locations of patients under investigation for privacy reasons. But Tedros Adhanom Ghebreyesus, the WHO's director-general, warned that "it may yet become become one". Here's a look at what we know, and what experts are trying to figure out.
In Los Angeles, ABC News reported a passenger that arrived at Los Angeles International Airport on a flight from Mexico City on January 22 was hospitalized as a precaution after appearing to be ill.
Typically, coronavirus infections manifest as the common cold.
He also said he had not visited the seafood market in Wuhan linked to the initial outbreak, they said. The market was closed earlier this month for disinfection. The Hubei provincial governor, Wang Xiaodong, said Wuhan has 5 million kilograms (11 million pounds) of rice, 4,000 tons of cooking oil and more than 10,000 tons of pork and beef in reserve, according to news outlet sina.com.
Airports across the nation have been ratcheting up their monitoring and checking of passengers from China and other countries for signs of illness, with local authorities accelerating quarantine efforts to contain the virus.
While Chinese officials were quick to inform world health authorities about the new disease, they appear to have tried to repress the news at home.
China's 2003 outbreak of SARS was believed to have originated through animal-to-human transmission in a marketplace like the one in Wuhan. "I've experienced so much, I've never felt scared, a lot of them are controllable, but this time I'm scared". "The CDC is the best of the best, and we should have faith in their leadership". He is the first known USA patient with the virus.
That's because coronaviruses tend to have long incubation periods; people can be infected but not develop respiratory symptoms or fevers for as long as two weeks. Test results for the virus returned positive over the weekend, officials said Tuesday. Those are cancelled in Wuhan but also in other places like the capital, Beijing.
China Southern, which flies from Wuhan to London, is allowing passengers to reschedule and cancel flights that arrive or transit via Wuhan without incurring a fee. Based on their recommendation, an ambulance was called shortly after midnight to take the person to a hospital, said Heath Montgomery, an LAX spokesman.
Chinese authorities said the number of cases leapt overnight to more than 800, with 177 in serious condition.
One case has also been confirmed in the U.S., while multiple people are being tested for the disease in the UK. So far, the hospital is limiting the flagging of patients to those who've travelled to Wuhan, as opposed to all of China.
Sydney is the only Australian city with direct flights to Wuhan. Others have evolved into more severe illnesses, such as SARS and MERS, although so far the new virus does not appear to be almost as deadly or contagious.
"All of those four patients have undergone testing".
A new question has been added to electronic kiosks at the airports, asking passengers if they've travelled to Wuhan.