Table 2 Correlation between serogroup-polysaccharide specific IgG levels and functional antibody titers (rSBA) in serum measured before (T0), one month (T1) and one year (T2) after the vaccination

MenA

0.11 (− 0.03–0.24), 0.14

0.34 (0.22–0.46), < 0.001

0.26 (0.13–0.39), 0.002

0.78 (0.75–0.81), < 0.001

MenC

0.64 (0.58–0.69), < 0.001

0.82 (0.78–0.85), < 0.001

0.84 (0.81–0.86), < 0.001

0.96 (0.96–0.97), < 0.001

MenW

0.01 (− 0.13–0.15), 0.85

0.23 (0.09–0.35), 0.0013

0.29 (0.16–0.41), < 0.001

0.74 (0.70–0.77), < 0.001

MenY

0.24 (0.11–0.38), 0.001

0.19 (0.05–0.32), 0.007

0.25 (0.12–0.38), 0.001

0.76 (0.72–0.79), < 0.001