Group of Seven finance officials said today they would take all possible steps to safeguard the global economy from the spreading coronavirus outbreak.
The Bank of Japan's Governor Haruhiko Kuroda promised a "good message".
On a conference call, the group of rich nations' finance ministers and central bank governors pledged actions including fiscal measures where appropriate to support the global economy, Japanese Finance Minister Taro Aso said.
He said the desirable policy response would vary from country to country.
The global policymakers' united front offset anxiety over the coronavirus' rapid spread in dozens of countries and aided a recovery in world stocks and oil prices.
Global stocks suffered a rout last week on fears that the disruption to supply chains, factory output and global trave lcaused by the epidemic could deal a serious blow to a world economy trying to recover from the US-China trade war.
The coronavirus, which emerged in the central Chinese city of Wuhan late last year, has spread fast around the world over the past week, with more new cases now appearing outside China than within.
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.
But new cases in China have been falling sharply, with 125 reported today, thanks to its aggressive containment measures.
After what critics said was an initially hesitant response to the virus, 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 hot spots elsewhere.
Authorities today asked overseas Chinese to reconsider or minimise their plans to travel home.
All travellers 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.