An outbreak of E. coli in eight U.S. states has killed one person and sickened dozens of others, prompting federal health officials to warn consumers nationwide not to eat bagged fresh spinach. Food and Drug Administration and state officials do not know the cause of the outbreak, although raw, packaged spinach appears likely. "We're advising people not to eat it," said Dr. David Acheson of the FDA's Center for Food Safety and Applied Nutrition. Eight states were reporting a total of 50 cases of E. coli, Acheson said Thursday. The death occurred in Wisconsin, where 20 people were reported ill,...