RT @MiriamETucker: CDC Influenza director Dr. Nancy Cox: 21,449 cases of pandemic #H1N1 confirmed in U.S. as of June 19 #ACIP
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RT @MiriamETucker: CDC Influenza director Dr. Nancy Cox: 21,449 cases of pandemic #H1N1 confirmed in U.S. as of June 19 #ACIP