U.S. stock futures down on swine flu worries By: MarketWatch April 27, 2009 at 05:57 AM EDT U.S. stock futures drop on Monday as the outbreak of deadly swine flu stirs up worries that a possible recovery in the global economy could be derailed. Read More >> Related Stocks: Bank of America Broadcom Corp Carnival Corp Gsk Plc ADR Qualcomm, Inc. Roche Holding AG Basel American Depositary Shares