The widening coronavirus outbreak threatens to seriously disrupt the global economy just as it was steadying itself against headwinds from the U.S.-China trade dispute.Stocks fell sharply on Monday around the world on news of more infections in different countries. The U.S. Dow Jones was down more than 900 points during mid-day trading, while in Europe, the pan-European Stoxx 600 dipped 3.6 percent amid fears about the first major outbreak on the Continent, an eruption of cases in Italy.