Stock futures tumble on swine flu concerns

NEW YORK (AP) — Wall Street is headed for a lower open as worries about swine flu unsettled markets around the world.

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The flu is not yet a global pandemic. The virus is suspected to be responsible for more than 100 deaths in Mexico, but the confirmed cases in the United States and Canada have been mild. Still, investors are nervous that the flu could spread and thwart economic recovery, particularly in areas that rely on travel and tourism. More...