Stocks fell sharply for a second day in a row. The Dow dropped 879 points on Tuesday, after tumbling more than 1,000 points on Monday.
While the coronavirus outbreak in China appears to have peaked, investors are worried by the growing number of cases in other countries, as well as a warning from U.S. health officials that the virus could hit closer to home.
Just last week, the S&P 500 stock index was hitting record highs. Now it's fallen more than 6% in just the last two days.