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Figure 2 | BMC Infectious Diseases

Figure 2

From: Factors associated with maintenance of antibody responses to influenza vaccine in older, community-dwelling adults

Figure 2

Predicted probability of seroprotection at S3 for each vaccine strain by age at enrollment and pre-vaccination HAI titer. Each graph shows the predicted probability of seroprotection for H1N1 (first column, H3N2 (second column) and B (third column) by the time from vaccination (first row) or the pre-vaccination HAI titer (second row) after influenza season for those with an HAI titer ≥40 after immunization (H1N1, n = 126; H3N2, n = 407; and B: n = 354).

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