Fig. 3 | Scientific Reports

Fig. 3

From: A phase 3 clinical trial on the immunogenicity and safety of booster vaccination after Zagreb or Essen regimens

Fig. 3

The GMFIR at 14 days after booster. The geometric mean 4-fold increase rate (GMFIR) was defined as the proportion of participants who were antibody-positive before the booster and had a 4-fold antibody titer rise after the booster. The statistical comparison was between the groups with the same primary vaccination regimen or the same booster dose. *P > 0.05, **P < 0.05, ***P < 0.001.

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