The toll from China's deadly coronavirus outbreak passed 1,000 on Tuesday after President Xi Jinping called for more "decisive" measures to tackle the outbreak in a rare visit to a frontline hospital.

The Chinese president donned a face mask and had his temperature checked while visiting medical workers and patients affected by the deadly coronavirus that has killed at least 1,011 people.

Countries or territories with confirmed cases of the novel coronavirus
Countries or territories with confirmed cases of the novel coronavirus AFP / Patricio ARANA

The fatalities soared after hardest-hit Hubei province -- the epicentre of the outbreak -- reported another 103 deaths on Tuesday, the highest single-day toll since the virus emerged.

At a hospital treating infected patients in Beijing, Xi on Monday called the situation at the epicentre "still very grave" and "more decisive measures" to contain the spread of the virus, said state broadcaster CCTV.

Xi has largely kept out of the public eye since the virus outbreak spiralled across the country from Hubei province to infect more than 42,000 people.

Women wearing protective face masks chat in Hong Kong, which has seen 26 cases of the new virus
Women wearing protective face masks chat in Hong Kong, which has seen 26 cases of the new virus AFP / DALE DE LA REY

He appointed Premier Li Keqiang to lead a group tackling the outbreak and it was Li who visited ground zero in Wuhan last month.

On Monday, Xi put on a blue mask and white surgical gown to meet doctors at Beijing Ditan hospital, observe the treatment of patients and speak via video link to doctors in Wuhan, state media said.

A medical worker wearing protective clothing monitors rail passengers arriving in Shanghai
A medical worker wearing protective clothing monitors rail passengers arriving in Shanghai AFP / NOEL CELIS

He then visited a residential community in central Beijing to "investigate and guide" efforts to contain the epidemic, said CCTV.

Video footage showed Xi having his temperature taken with an infrared thermometer then speaking with community workers and waving at smiling residents leaning out of apartment windows.

The outbreak has prompted unprecedented action by the Chinese government, including locking down entire cities in Hubei as well as cutting transport links nationwide, closing tourist attractions and telling hundreds of millions of people to stay indoors.

The death toll from the novel coronavirus has overtaken global fatalities in the 2002-03 SARS epidemic
The death toll from the novel coronavirus has overtaken global fatalities in the 2002-03 SARS epidemic AFP / NOEL CELIS

The sweeping measures have turned cities into ghost towns -- but there were some signs of normality returning as many went back to work this week.

Experts have warned of the risk of a bump in infection cases when people return to work
Experts have warned of the risk of a bump in infection cases when people return to work AFP / NOEL CELIS

Roads in Beijing and the financial hub of Shanghai had significantly more traffic, while the southern city of Guangzhou said it would start to resume normal public transport.

However, many of those returning to work were uneasy.

People in China are slowly returning to work on Monday after an extended holiday designed to slow the spread of a virus that has already killed more than 900 people.
People in China are slowly returning to work on Monday after an extended holiday designed to slow the spread of a virus that has already killed more than 900 people. AFPTV / Matthew KNIGHT

"Of course we're worried," said a 25-year-old man surnamed Li in a Beijing beauty salon that reopened Monday.

"When customers come in, we first take their temperature, then use disinfectant and ask them to wash their hands."

People wearing protective suits walk from the Diamond Princess cruise ship where 135 cases of the virus have been detected -- the vessel is quarantined in Yokohama, Japan
People wearing protective suits walk from the Diamond Princess cruise ship where 135 cases of the virus have been detected -- the vessel is quarantined in Yokohama, Japan AFP / CHARLY TRIBALLEAU

The Shanghai government suggested staggered work schedules, avoiding group meals and keeping at least one metre (three feet) away from colleagues.

Many were encouraged to work from home and some employers simply delayed opening for another week.

State media reported that passenger numbers on the Beijing subway were half that of a normal working day.

Large shopping malls in the capital were deserted and many banks closed.

One bank employee in Shanghai was heading to work for a half-day, with other workers due to take over in the afternoon.

The rest of the day he would work from home.

"It makes our work more difficult," he told AFP.

Schools and universities across the country remained shut.

The toll has overtaken global fatalities in the 2002-03 SARS epidemic when China drew international condemnation for covering up cases, though Beijing has drawn praise from the World Health Organization this time.

An advance team for a WHO-led international expert mission on the virus arrived in China late Monday, headed by Bruce Aylward who oversaw the organization's 2014-2016 response to the Ebola epidemic in West Africa.

Ahead of the team's arrival, WHO chief Tedros Adhanom Ghebreyesus warned there had been some "concerning instances" of cases overseas in people with no travel history to China.

"We may only be seeing the tip of the iceberg," he tweeted.

Aboard the quarantined Diamond Princess cruise ship moored off Japan, another 65 people were diagnosed with novel coronavirus, the health ministry said, bringing the total number of known infections on the ship to 135.

The Diamond Princess has been in quarantine since arriving off the Japanese coast early last week after the virus was detected in a former passenger who disembarked last month in Hong Kong.

And US President Donald Trump said he expected the outbreak would disappear in April due to hotter weather, despite top US health officials warning against commenting on the epidemic's trajectory.