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China's manufacturing-purchasing-managers index fell to 35.7 in February, the lowest since the survey began in 2004, according to data released by the National Bureau of Statistics on Saturday.

The dismal number came amid a coronavirus outbreak that has slowed economic activity in China and disrupted supply chains.

Now the world is on high alert as the virus spreads to other countries.

On Monday, the Organization for Economic Cooperation and Development said the virus had put the world economy in its most "precarious position" since the 2008 financial crisis.

Read more on Business Insider.

China's factories had a rough month because of the coronavirus outbreak, and now the world is bracing for further pain.

China's manufacturing-purchasing-managers index fell to 35.7 in February from 50 in January, according to data released by the National Bureau of Statistics on Saturday. It was the lowest reading for the indicator since the survey began in 2004. China's non-manufacturing gauge also fell to 29.6, its lowest ever. Any reading below 50 signals a contraction.

The dismal reading came amid the coronavirus outbreak that originated in Wuhan, China. The slump in economic activity was driven by the Chinese government's virus-control measures, including quarantines, travel restrictions, and factory closures.

In addition, production, new orders, and staffing levels plummeted at the fastest rates on record in February, while supply chains and delivery times took a hit, CNN reported on Sunday, citing the Caixin media group.

Fears that the outbreak will hinder global growth have sparked panic in global markets, which are poised for an eighth straight day of losses on Monday after tumbling into correction territory in February. As investors rushed to safe-haven assets, yields on the 10-year and 30-year US Treasury bonds fell to record lows.

There could be further pain ahead. Though some factories in China are running again, they may not be working at full capacity, according to Bloomberg.

The spread of the virus around the world has sparked fears that other economies could be hit as well. While the majority of the 3,000 deaths and 89,000 people infected have been in China, cases have appeared in more than 60 other countries, including Italy, Iran, and the US.

On Monday, the Organization for Economic Cooperation and Development said the virus had put the world economy in its "most precarious position" since the 2008 financial crisis.

"There is mounting evidence of sharp declines in tourism, supply chain disruptions, weak commodity demand and falling consumer confidence," Laurence Boone, the OECD's chief economist, wrote in a Monday note.

The organization also forecast a sharp slowdown in global growth in early 2020, to 2.4% from a 3% forecast in November, because of the coronavirus epidemic. But if the epidemic breaks out in other countries, "the slowdown will be sharper and more prolonged," and global GDP could fall to as low as 1.5% this year, according to the OECD.

"Containment measures and fear of infection would hit production as well as spending hard and drive many of the epidemic affected countries into outright recession," Boone wrote.

The world economy was already weakened by persistent trade and political tensions and is now "too fragile for governments to gamble on an automatic sharp bounce-back," Boone said.

Beyond containing the epidemic and limiting cases of serious illness, the priority should be "allowing short-time working schemes and providing vulnerable households temporary direct transfers to tide them over loss of income from work shutdowns and layoffs," the note said.

"Increasing liquidity buffers to firms in affected sectors is also needed to avoid debt default of otherwise sound enterprises," Boone wrote. "Reducing fixed charges and taxes and credit forbearance would also help to reduce the pressure on firms facing an abrupt falloff in demand."

In addition, Boone said, coordinated fiscal and monetary support by countries would compound the effects of policies and help reverse depressed confidence levels.

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