Flu season is worst in 4 years, CDC says

Thursday, April 17, 2008 | 4:19 p.m. CDT; updated 11:02 a.m. CDT, Tuesday, July 22, 2008

ATLANTA — The current flu season has shaped up to be the worst in four years, partly because the vaccine didn't work well against the viruses that made most people sick, health officials said today.

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