Beijing, China/Washington DC, US

US President Donald Trump will seek $US2.5 billion from Congress to fight the coronavirus epidemic and US and South Korean militaries are considering scaling back joint training as the virus spreads in Europe and the Middle East.

Countries around the world are stepping up efforts to prevent a pandemic of the flu-like virus that originated from China late last year and has now infected more than 80,000 people, 10 times more cases than the SARS coronavirus.

Coronavirus Beijing masked cyclist

People wear face masks in a street after the novel coronavirus outbreak in Beijing, China, on 23rd February. PICTURE: Reuters/Thomas Peter

The White House said more than $US1 billion of the requested virus budget would go toward developing a vaccine, while other funds would be used for therapeutics and the stockpiling of personal protective equipment such as masks.

The US and South Korean militaries said on Monday they may cut back joint training due to mounting concerns about the spreading coronavirus, in one of the first concrete signs of the virus's fallout on global US military activities.

The disclosure came during a visit to the Pentagon by South Korean Defense Minister Jeong Kyeong-doo, who acknowledged following talks with US Defense Secretary Mark Esper that 13 South Korean troops had tested positive for the virus.

"We do regard this situation as a serious one," Jeong told a news conference, adding he had suspended military vacations and off-base leave. 

"We have also limited their movement across the nation."

Earlier on Monday, the US military said a 61-year-old woman in South Korea who tested positive for the virus had recently visited a US military base in the southeastern city of Daegu.

The woman, who was the widow of a former US servicemember, visited a store at Camp Walker on 12th and 15th February, the military said. It was the first infection connected to US Forces Korea, which counts about 28,500 American troops on the peninsula.

US Forces Korea said it was raising the risk level to "high" across the country. It urged US troops to limit travel and "use extreme caution when traveling off-installation."

South Korea - which remains technically at war with the nuclear-armed North - has the most virus cases in Asia outside China and reported 60 new cases on Tuesday, increasing the total number of infected patients in the country to 893.

Of the new cases, 16 were in the southeastern city of Daegu, where a church at the centre of the outbreak is located, and 33 were from North Gyeongsang Province, health officials said.

Americans should avoid all non-essential travel to South Korea due to the coronavirus outbreak, the US Centers for Disease Control and Prevention said on Monday.

Japanese Health Minister Katsunobu Kato said it was too early to talk about cancelling the Tokyo Summer Olympics, which start on 24th July, due to the coronavirus. Japan has 850 cases, most from a cruise ship, and has recorded four deaths.

Questions have risen about whether the Olympics should be moved or cancelled, with one London mayoral candidate saying London was ready to host the games if needed.

Peak in China
China reported a rise in new coronavirus cases in Hubei province, the epicentre of the outbreak, on Tuesday while the rest of the country saw a fourth-straight day of declines.

Hubei had 499 new confirmed cases on 24th February, the National Health Commission said, up from 398 a day earlier and driven mainly by new infections in the provincial capital of Wuhan.

Mainland China reported 508 new cases, up from 409 on 23rd February, bringing the total number to 77,658.

The epidemic in China peaked between 23rd January and 2nd February and has been declining since, said the World Health Organization. China's actions of locking down cities and severely restricting the movement of people has probably prevented hundreds of thousands of cases, it said.

"They're at a point now where the number of cured people coming out of hospitals each day is much more than the sick going in," said head of the WHO delegation in China, Bruce Aylward.

Italy on Monday became the new frontline in the fight against the coronavirus with 220 cases reported from just three on Friday. The death toll in Italy stands at seven.

Italian authorities have sealed off the worst-affected towns, closed schools and halted the carnival in Venice, where there were two cases.

Kuwait, Bahrain, Oman, Afghanistan and Iraq reported their first new coronavirus cases, all in people who had been to Iran where the toll was 12 dead and 61 infected. Most of the Iran infections were in the Shi'ite Muslim holy city of Qom.

Asian share markets were trying to stabilise on Tuesday after the surge of cases outside mainland China and fears of a pandemic sent global markets into a tailspin.

Some dealers cited a Wall Street Journal report on a possible vaccine as helping sentiment, though human tests of the drug might not start until the end of April. 

European equities markets suffered their biggest slump since mid-2016 on Monday, gold soared to a seven-year high and oil tumbled four per cent.

The Dow Jones Industrials and S&P 500 posted their biggest one-day percentage drops in over two years and Nasdaq had one of its worst days since December 2018.

Wall Street's fear gauge, the CBOE Volatility Index, jumped to a one-year high.

Earlier, WHO chief Tedros Adhanom Ghebreyesus said the word "pandemic" did yet not fit the facts.

"We must focus on containment while preparing for a potential pandemic," he told reporters in Geneva, adding that the world was not witnessing an uncontained spread or large-scale deaths.

Outside mainland China, the outbreak has spread to about 29 countries and territories, with a death toll of about two dozen, according to a Reuters tally.

- With reporting by YILEI SUN and LUSHA ZHANG in Beijing and Phil Stewart in Washington