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Centers for Disease Control and Prevention

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Typically, the flu is most dangerous for the very young and very old. This season is different: according to the CDC, 61% of those hospitalized are between 18 and 64 years old, and about 90 percent of cases are caused by the H1N1 strain of the virus

Typically, the flu is most dangerous for the very young and very old. This season is different: according to the CDC, 61 percent of those hospitalized are between 18 and 64 years old, and about 90 percent of cases are caused by the H1N1 strain of the virus. Carter Evans reports.

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