More than 1,300 people have been infected globally with a virus traced to a seafood market in the central city of Wuhan that was illegally selling wildlife. Health authorities around the world are scrambling to prevent a pandemic.

State-run China Global Television Network reported in a tweet on Saturday that a doctor who had been treating patients in Wuhan, 62-year-old Liang Wudong, had died from the virus.

It was not immediately clear if his death was already counted in the official toll of 41, of which 39 were in the central province of Hubei, where Wuhan is located.

U.S. coffee chain Starbucks said on Saturday that it was closing all its outlets in Hubei province for the week-long Lunar New Year holiday, following a similar move by McDonald’s in five Hubei cities.

Wuhan, a city of 11 million, has been in virtual lock down since Thursday, with nearly all flights at the airport canceled and checkpoints blocking the main roads leading out of town. Authorities have since imposed transport restrictions on nearly all of Hubei province, which has a population of 59 million.

In Beijing on Saturday, workers in white protective suits checked temperatures of passengers entering the subway at the central railway station, while some train services in eastern China’s Yangtze River Delta region were suspended, the local railway operator said.

The number of confirmed cases in China stands at 1,287, the National Health Commission said on Saturday.

The virus has also been detected in Thailand, Vietnam, Singapore, Japan, South Korea, Taiwan, Nepal, Malaysia, France, the United States and Australia.

Australia on Saturday announced its first case of coronavirus, a Chinese national in his 50s, who had been in Wuhan and arrived from China on Jan. 19 on a flight from Guangzhou. He is in stable condition in a Melbourne hospital.

“Given the number of cases that have been found outside of China and the significant traffic from Wuhan city in the past to Australia, it was not unexpected that we would get some cases,” Australia’s Chief Medical Officer Brendan Murphy told a news conference.

“This is the first confirmed case. There are other cases being tested each day, many of them are negative, but I wouldn’t be surprised if we had further confirmed cases.”

The U.S. Centers for Disease Control and Prevention said on Friday it had 63 patients under investigation, with two confirmed cases, both in people who had traveled to Wuhan.

The World Health Organization (WHO) declared the new coronavirus an “emergency in China” this week but stopped short of declaring it of international concern.

Human-to-human transmission has been observed in the virus.

China’s National Health Commission said on Saturday it had formed six medical teams totaling 1,230 medical staff to help Wuhan. Three of the six teams, from Shanghai, Guangdong and military hospitals have arrived in Wuhan.

Hubei province, where authorities are rushing to build a 1,000 bed hospital in six days to treat patients, announced on Saturday that there were 658 patients affected by the virus in treatment, 57 of whom were critically ill.

The newly-identified coronavirus has created alarm because there are still many unknowns surrounding it, such as how dangerous it is and how easily it spreads between people. It can cause pneumonia, which has been deadly in some cases.

Symptoms include fever, difficulty breathing and coughing. Most of the fatalities have been in elderly patients, many with pre-existing conditions, the WHO said.

Airports around the world have stepped up screening of passengers from China, though some health officials and experts have questioned the effectiveness of such screenings and of the lock down.

Health officials fear the transmission rate could accelerate as hundreds of millions of Chinese travel before and during the week-long Lunar New Year holiday, which began on Saturday, although many have canceled their plans, with airlines and railways in China providing free refunds.

The virus outbreak and efforts to contain it have put a dampener on what is ordinarily a festive time of year.

Shanghai Disneyland was closed from Saturday. The theme park has a 100,000 daily capacity and sold out during last year’s Lunar New Year holiday.

Beijing’s Lama Temple, where people traditionally make offerings for the new year, has also closed, as have some other temples and the Forbidden City, the capital’s most famous tourist attraction. Sections of the Great Wall near the capital were also closed off.

Film premieres have been postponed.

REUTERS