Fears over the global economic impact of a deadly new SARS-like virus sent oil prices plunging more than two percent on Monday to extend last week's sell-off, while safe-haven assets including the yen and gold rallied.

As the death toll from the Chinese epidemic jumped to 80 with those affected worldwide approaching 3,000, analysts said there were growing fears the crisis could become as bad as the Severe Acute Respiratory Syndrome (SARS) outbreak that hammered Asian markets in 2003.

The outbreak of the coronavirus has led China to lock down the epicentre of the disease, Wuhan -- a city of 11 million people -- while imposing tight travel restrictions on a number of other cities including Beijing.

The move comes during the Lunar New Year holiday when hundreds of millions of people criss-cross the country and spend billions of dollars.

The government decided late Sunday it would extend the holiday and related school closures beyond January 30 end date to "reduce population flows", state media said.

China Sars-like virus
People across China have been wearing face masks in a bid to protect themselves and stop the spread of the deadly virus Photo: AFP / DALE DE LA REY

The outbreak has led to the cancellation of festivities, along with temporary closures of Beijing's Forbidden City, Shanghai's Disneyland and a section of the Great Wall.

Stephen Innes at AxiCorp warned the economic shock to China and the world -- just as a growth slowdown appeared to be easing -- could be massive.

"The biggest threat to the global economy is not just because the disease spreads quickly across countries through networks related to global travel," he said in a note.

"But also because any economic shock to China's colossal industrial and consumption engines will spread rapidly to other countries through the increased trade and financial linkages associated with globalisation."

He added: "Unlike 2003 where SARS was less impactful on the developed world market, the rest of the world could feel the pinch this time around."

China Sars-like virus
As the death toll from the Chinese epidemic jumped to 80 with those affected worldwide approaching 3,000, analysts said there were growing fears the crisis could become as bad as the SARS outbreak that hammered Asian markets in 2003 Photo: AFP / Mark RALSTON

If the new virus has the same impact on China as SARS, the falls could be worse then projected, Innes said, because consumption is a bigger part of the country's economy and its overall growth trajectory is weaker.

Most regional markets were closed for the Lunar New Year break, but Tokyo was open and fell two percent. Bangkok plunged nearly three percent on worries about the Thai travel sector, while Mumbai, Wellington, Manila and Jakarta also suffered losses.

Both main oil contracts tumbled more than two percent, having dropped more than six percent last week owing to concerns about the effects on demand in the world's number two economy.

"With ample supply around the world, oil is more vulnerable than most markets to a shock economic growth slow down," said OANDA analyst Jeffrey Halley.

China Sars-like virus
People with face masks ride a BTS Sky train in Bangkok, Thailand, which has detected eight virus cases so far, three receiving treatment in hospital and five discharged Photo: AFP / Mladen ANTONOV

The flight to safety saw the yen rally against the dollar, with the unit now up more than one percent from eight-month lows touched earlier this year.

However, the greenback rose across the board against higher-yielding, riskier units such as the South Korean won, Thai baht, Indonesian rupiah and Australian dollar.

Gold, another go-to asset in times of turmoil and uncertainty, is heading back towards $1,600 and the six-year peaks touched at the start of January.

While the main focus is on the spread of the virus, traders will also be keeping an eye on the release of earnings this week from top companies including Apple, Facebook and Samsung.

Tokyo - Nikkei 225: DOWN 2.0 percent at 23,343.51 (close)

Hong Kong - Hang Seng: Closed for a public holiday

Shanghai - Composite: Closed for a public holiday

Brent Crude: DOWN 2.3 percent at $59.32 per barrel

West Texas Intermediate: DOWN 2.4 percent at $52.87 per barrel

Dollar/yen: DOWN at 108.99 yen from 109.23 yen at 2150 GMT Friday

Euro/dollar: UP at $1.1028 from $1.1027

Pound/dollar: DOWN at $1.3061 from $1.3077

Euro/pound: DOWN at 84.27 pence from 84.32 pence

New York - DOW: DOWN 0.6 percent at 28,989.73 (close)

London - FTSE 100: UP 1.0 percent at 7,585.98 (close)

Copyright AFP. All rights reserved.