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Table 2 Pre-booster anti-HBs titer by vaccine group.

From: A cohort study to evaluate persistence of hepatitis B immunogenicity after administration of hexavalent vaccines

Anti-HBs titer (mIU/ml) Group 1 (N = 113) Hexavac® n (%) Group 2 (N = 124) Infanrix Hexa® n (%) p-value RR (95%CI)
< 10 35 (31.0) 5 (4.0) < 0.0001* 7.7 (3.1 – 18.9)
10 – 99 47 (41.6) 22 (17.8) < 0.0001** 3.3 (2.1 – 4.9)
≥ 100 31 (27.4) 97 (78.2) - -
  1. * < 10 vs ≥ 10; ** 10–99 vs ≥ 100