Flu season strikes U.S.

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Coughing Robot Spews 'Flu Germs'

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Flu season in the U.S. has struck early and, in many places, hard. From the Rocky Mountains to New England, hospitals are swamped with people with flu symptoms. Boston declared a public health emergency, with the city's hospitals counting about 1,500 emergency room visits since December by people with flu-like symptoms.

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