Study: Flu vaccine may not be effective

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The Centers for Disease Control and Prevention said Thursday a group of Colorado hospital workers found the flu vaccine had low to zero effectiveness in combating the influenza-like illness. Influenza-like illness is defined as a person having a suspected fever (not confirmed) with a cough or soar throat.

The CDC was careful to point out that the predominant flu viruses circulating this season differ from the influenza A vaccine strain.

The preliminary study was in the Jan. 16 Morbidity and Mortality Weekly Report, found at