
• This year's flu vaccine wasn't entirely effective against the early-season influenza A, but it may help with the influenza B strain that emerged more recently.
Today's reporting by Bob Moffitt and Sammy Caiola.

• This year's flu vaccine wasn't entirely effective against the early-season influenza A, but it may help with the influenza B strain that emerged more recently.
Today's reporting by Bob Moffitt and Sammy Caiola.
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