U.S. stock-index futures swooned Thursday as investors worried about coronavirus cases rising again and digested Wednesday’s downbeat economic outlook from the Federal Reserve. The market moves came even as the number of Americans filing for jobless benefits for the first time continued to decline in the most recent week. What’s driving the market? The number of U.S. coronavirus infections passed the two million mark and over 112,000 Americans have died, according to Johns Hopkins University. Despite fewer cases being recorded in some cities and states, the seven-day average of new cases over the last two weeks is still rising in...