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Survival after H1N1 influenza virus challenges of mice. BALB/c mice (11 mice/group) were vaccinated on days 0, 28, and 56 with each vaccine plus the AF03 adjuvant and infected on day 84 with 1 × 106 PFU/ml of the H1N1 influenza virus. Kaplan-Meier survival curves for vaccinated mice challenged with A/California/07/2009 (CA/09) (A) or A/Brisbane/59/2007 (Bris/07) (B) influenza virus are shown. The percent survival per vaccine group is listed in parentheses.
