Trapped in a Chinese city at the centre of a deadly viral outbreak, residents who should have been celebrating Lunar New Year lined up to have their temperatures taken by medical staff wearing full-body protective suits.

At hospitals across Wuhan in central Hubei province, tense patients with high temperatures turned out in large numbers to get checked as the death toll rose to 26 and the number of cases topped 800, most of them in the city.

The streets were otherwise empty and quiet on Friday, with people ordered not to leave the city and public events cancelled.

At hospitals across Wuhan, patients with high temperatures turned out in large numbers to get checked At hospitals across Wuhan, patients with high temperatures turned out in large numbers to get checked Photo: AFP / STR

"I have a fever and cough, so I'm worried that I'm infected," a 35-year-man surnamed Li said at the Wuhan Fifth Hospital.

"I don't know the results (of tests) yet. I'm a bit worried."

Most of the people at the hospital were middle-aged or older, and were being given mercury thermometers on arrival.

After taking their temperatures themselves from their mouth or armpit, jittery patients handed the instruments back to medical staff decked in full white protective suits with a hood, gloves, face mask and goggles.

The death toll has risen to 26 and the number of cases has topped 800, most of them in Wuhan The death toll has risen to 26 and the number of cases has topped 800, most of them in Wuhan Photo: AFP / Hector RETAMAL

The thermometers were briefly checked, then dropped in a large metal box.

One nurse took a thermometer from a middle-aged woman, pausing to examine the reading, before quickly turning back to the patient and instructing her to "go and see the doctor".

Lunch boxes were reserved for patients in isolation at the Zhongnan hospital in Wuhan Lunch boxes were reserved for patients in isolation at the Zhongnan hospital in Wuhan Photo: AFP / STR

At another hospital, 42-year-old Huang Wei said he was worried the situation would worsen if sick people stood next to each other, and that the city of 11 million people would not have the medical capacity to cope with a bigger outbreak.

"The medical treatment is not sufficient, the time is too long, and cross-infection may be caused by queueing in the hospital," he said.

"This is what we are worried about."

People have been ordered not to leave Wuhan People have been ordered not to leave Wuhan Photo: AFP / Hector RETAMAL

Patients waited for several hours for temperature checks at the Red Cross hospital, with many sitting on stools because the queue was so long.

Hubei governor Jiang Chaoliang said in a meeting Friday that hospitals must make sure patients are "admitted in time," according to a statement on the government's website.

Wuhan must also "make every effort" to increase isolation places and beds, Jiang said.

All staff at both hospitals were in full-body protection, but some of the patients waiting to be checked were not even wearing masks -- in defiance of an order by city authorities.

A hotel employee takes the temperature of a person that just arrived at the premise in Wuhan A hotel employee takes the temperature of a person that just arrived at the premise in Wuhan Photo: AFP / Hector RETAMAL

At a nearby pharmacy, nervous staff wouldn't allow people inside.

Instead, they half-opened the door and passed out what customers were ordering -- mostly face masks.

But not all their customers were as cautious.

One older lady told AFP she had bought a mask, but didn't wear it because she only shopped at the local market and didn't believe there was a threat there.

A notice outside the Wuhan Fifth Hospital said the facility was to be "entirely used for handling fever patients".

"Our hospital will no longer take in patients with other diseases," it read.

But despite the high number of infected people, security was low and the hospital was disorderly.

A nurse at a temperature station was the only member of staff at the entrance, meaning people could enter and leave from the street freely.

The police were noticeably absent across the city, though a few well-covered officers waited in a van near the hospital, wearing plastic suits and face masks.

The Wuhan Health Commission told the People's Daily that the city was seeing long queues at fever treatment centres, with seven hospitals "fully utilised".

The city is also building a new hospital within a staggering 10 days to deal with the outbreak.

Dozens of excavators and trucks were working on the site of the future hospital.

The facility will have a capacity of 1,000 beds, and the construction area is 25,000 square metres (270,000 square feet), state media said.

For now, the doctors and staff at the Fifth Hospital know their priorities.

"Those who are not ill, get out!" a guard called at the entrance to its outpatient department.