The US Federal Reserve cut interest rates on Tuesday in an emergency move designed to shield the world's largest economy from the impact of the coronavirus as Group of Seven finance officials pledged all appropriate policy moves.
In a statement, the Fed said it was cutting rates by a half percentage point to a target range of 1.00 per cent to 1.25 per cent.
"The fundamentals of the US economy remain strong. However, the coronavirus poses evolving risks to economic activity," it said in a statement.
The coronavirus, which emerged in the central Chinese city of Wuhan late last year, has spread around the world over the past week, with more new cases now appearing outside China than within. It has hit sports events, trade exhibitions, book fairs, prayer meets and other large gatherings worldwide.
There are more than 90,000 cases globally, with more than 80,000 of them in China, and infections appearing in 77 other countries and territories, with Ukraine the latest country to report its first case.
China's death toll is 2,943, with more than 75 deaths elsewhere.
Finance ministers from the G7 group of rich countries were ready to take action, including fiscal measures where appropriate, Japanese Finance Minister Taro Aso told reporters. Central banks would continue to support price stability and economic growth.
"We reaffirmed our commitment to adopt all appropriate policy steps to protect the economy from downside risks posed by the coronavirus, and that we stand ready to cooperate further on timely and effective measures," Aso said after a G7 call.
He was short on specifics and said the desirable policy response would vary from country to country.
Asked if all appropriate policy steps would include both monetary and fiscal policies, Aso said: "Yes, anything will be included, both monetary and fiscal steps."
US Treasury Secretary Steven Mnuchin told the US House Ways and Means Committee that G7 finance ministers and central bank governors had agreed to "do everything possible" to limit economic harm.
A sharp rebound in world stock markets lost only a little steam on Tuesday despite a lack of any immediately gratifying G7 measures. Europe's main bourses were almost 2 per cent higher But Wall Street's main S&P 500 and Dow Jones markets gave up early gains to slip into the red.
"This is a tug of war between hope and fear. Central banks are giving hopes with their potential stimulus," said Vasu Menon, senior investment strategist at OCBC Bank Wealth Management.
"The question is what they will do? Monetary policy is already very loose and interest rates are very low," Menon added.
German Finance Minister Olaf Scholz said the G7 had "all means" at its disposal.
"Should the need arise, we have all the means to counter a global downturn," Scholz said in a statement on Twitter.
Global stocks suffered a rout last week on fears that the disruption to supply chains, factory output and global travel caused by the epidemic could deal a serious blow to a world economy trying to recover from the US-China trade war.
New coronavirus cases in China have been falling sharply, with 125 reported on Tuesday, thanks to aggressive containment measures.
After what critics said was an initially hesitant response, China imposed sweeping restrictions, including suspensions of transport, sealing off communities, and extending a Lunar New Year holiday across the country.
Now China is increasingly concerned about the virus being brought back into the country by citizens returning from new hotspots elsewhere. Authorities on Tuesday asked overseas Chinese to reconsider or minimize their plans to travel home.
All travelers entering Beijing from South Korea, Japan, Iran and Italy would have to be quarantined for 14 days, a city official said. Shanghai has introduced a similar order.
The most serious outbreak outside China is in South Korea, where President Moon Jae-in declared war on the virus, ordering additional hospital beds and more masks as cases rose by 600 to nearly 5,000. Thirty-four people have died in South Korea.
In the United States, the virus is now believed to be present in at least four communities in the Pacific Northwest - two in northern California, one in Oregon and one in Washington state - and authorities there are having to go well beyond the quarantine of infected travelers and tracing of close contacts, which until now had been the response.