[quote=Arney
A quote from the CDC website: "In 16 of the last 19 U.S. influenza seasons, the viruses in the influenza vaccine have been well matched to the predominant circulating viruses."

(In layman terms, they was a better match to profit than there was to prevention of the flu in the American market. They didn't change the formulation sold in the US for four years.)

Sounds like a pretty good track record to me. And the vaccine doesn't have to be a perfect match to provide a benefit. [/quote]

A quote from the CDC three weeks after they sponsored massive advertising to quickly sell out of the current flu vaccine - "...leaving the Centers for Disease Control and Prevention (CDC) to cavil that, after all, the vaccine "may provide some protection or lessen the symptoms..." They admitted having the wrong vaccine and delaying the news release until it was sold.

The next flu season they were forced to admit selling diluted vaccine via the same massive advertising.