Fig. 6
From: Investigation of CD4 and CD8 T cell-mediated protection against influenza A virus in a cohort study
The odds ratios for influenza virus infection for every fold increase in influenza subtype-specific CD4 (A) and CD8 (B) T cell response for sH1N1, pH1N1, and H3N2 estimated by logistic regression for children (age < 18) and adults (age ≥ 18), adjusted for pre-epidemic HAI titer and difference in infection risk for epidemics for pH1N1 (2009 pandemic, 2011 and 2013 epidemic) and H3N2 (2010, 2012, 2013 epidemic). Arrow in confidence intervals indicates that the upper bound was higher than 2 (which is the limit of the x-axis)