Incidence of symptomatic A/H1N1 2009 pandemic influenza virus infection and percentage of vaccinated individuals already infected before vaccination in Norway during the 2009 pandemic.

Middle column: Model-projected percentage with symptomatic A/H1N1 2009 pandemic influenza virus infection, by age and pooled across all age groups. Right column: Model-projected percentage of vaccinees at the end of the pandemic who were infected with A/H1N1 2009 pandemic influenza virus before receiving vaccination in Norway, by age and pooled across all age groups. Base case.