Asian share markets were trying to stabilise on Tuesday after a wave of early selling petered out and Wall Street futures managed a solid bounce, allowing investors to take a break from coronavirus fears.
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.
Whatever the cause, E-Mini futures for the S&P 500 bounced 1 percent to pare some of the steep 3.35 percent loss the cash index suffered overnight.
South Korea's hard-hit market edged up 0.8 percent and helped MSCI's broadest index of Asia-Pacific shares outside Japan fight back to flat.
Japan's Nikkei was still down 2.8 percent, but just catching up to the global sell-off having been shut on Monday.
Shanghai blue chips eased 0.7 percent but also off early lows.
European and US stocks had suffered their biggest losses since mid-2016 amid fears the coronavirus was morphing into a pandemic that could cripple global supply chains and wreak far greater economic damage than first thought.
The risks were such that bond markets were wagering central banks would have to ride to the rescue with new stimulus.
Futures for the Federal Reserve funds rate have surged in the last few days to price in a 50-50 chance of a quarter-point rate cut as early as April.
In all, they imply more than 50 basis points of reductions by year-end. Central banks across Asia have already been easing policy, while governments have promised large injections of fiscal stimulus, something western countries might also have to consider.
The Dow had ended Monday down 3.55 percent, while the S&P 500 lost 3.35 percent and the Nasdaq 3.71 percent.
Wall Street's fear gauge, the CBOE Volatility Index, jumped to its highest close since early 2019.
Underlining the economic impact of the virus was a 3.5 percent drop in Apple Inc as data showed sales of smartphones in China tumbled by more than a third in January.
Bonds bay for rate cuts
The coronavirus death toll climbed to seven in Italy on Monday and several Middle East countries were dealing with their first infections, feeding worries it could turn into a pandemic.
"If travel restrictions and supply chain disruptions spread, the impact on global growth could be more widespread and longer-lasting," said Jonas Glotermann at Capital Economics.
"While we still think that it would take a significant deterioration in the outlook for the US economy for policymakers to cut rates, they may feel compelled to do so if the virus spreads and leads to continued falls in the stock market and inversion of the Treasury yield curve."
The rush to bonds left yields on 10-year Treasury notes at 1.40 percent, down almost 20 basis points in just three sessions and paying less than overnight rates.
Yields were now rapidly approaching the all-time low of 1.321 percent hit in July 2016.
The sharp drop, combined with the simple fact the Fed had far more room to cut rates than its peers, kept the US dollar restrained after a run of strong gains.
The euro edged up a little from recent three-year lows to reach $1.0858, while the dollar was back at 110.90 yen and away from a 10-month top of 112.21. Against a basket of currencies, the dollar was all but steady at 99.288.
Gold ran into profit-taking after hitting a seven-year peak overnight and was last at $1,649.80 an ounce.
Oil steadied after shedding nearly 4 percent on Monday. US crude was up 22 cents at $51.65, while Brent crude firmed 28 cents to $56.58.