News & Perspective

Feb 11, 2011

Feb 11, 2011

US flu activity rises, shifts toward 2009 H1N1 strain

(CIDRAP News) – The nation's flu activity increased again for the fourth week in a row, and for the first time the number of specimens testing positive for the 2009 H1N1 virus topped the H3N2 strain, which for the past several weeks had dominated, the Centers for Disease Control and Prevention (CDC) said today.

Feb 11, 2011

Study showing high effectiveness for H1N1 vaccine stirs debate

(CIDRAP News) – A recent case-control study estimates that the adjuvanted pandemic H1N1 influenza vaccine used in Canada was effective 93% of the time, a substantially higher figure than seen in several other studies and one that has raised some eyebrows among other flu vaccine researchers.

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