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 Thursday.
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This year, most of the illness has been due to Type A H3N2 Brisbane strain, which was not in the vaccine. That strain tends to cause more hospitalizations and deaths, contributing to this season's severity, CDC officials said.
Type B Florida strain, also absent from this year's vaccine, has also been causing illness. Marshfield data showed that the vaccine was completely ineffective against the Type B virus, and was 58 percent effective against the Brisbane virus.
I forgot to get a flu shot but it seems that it wouldn't have mattered. I had the flu a couple of weeks ago. It knocked me out. Now my allergies are in full swing. achoo.
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