WASHINGTON (AP) -- One vaccine used in Europe during the 2009 swine flu pandemic was linked to rare cases of a baffling side effect - the sleep disorder narcolepsy. Now new research offers a clue to what happened....
By LAURAN NEERGAARD, Associated Press: Nation
Wed, 07/01/2015 - 12:43pm
WASHINGTON (AP) -- One vaccine used in Europe during the 2009 swine flu pandemic was linked to rare cases of a baffling side effect - the sleep disorder narcolepsy. Now new research offers a clue to what happened....