date:Sep 28, 2018
ut 40 percent overall; however, in a predominant strain, H3N2, the protection was just 25 percent.
Food and Drug Administration Commissioner Dr. Scott Gottlieb, in a separate statement Thursday, said the FDA, CDC and other agencies have made changes to try to strengthen the vaccine: replacing the H3N2 strain for one they hope will be a better match, and swapping out one of the B strains as well. (Each flu vaccine contains two A strains of virus and one B strain; some contain two B strains.)
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