Fig. 1: Longitudinal dynamics of neutralizing antibody responses induced by the booster vaccines.

a Neutralizing antibody titers after the third-dose vaccination against the prototype (left) or Omicron variant (right) evaluated by pVNT. The horizontal bars indicate the GMT, and error bars indicate the 95% confidence interval. b Neutralizing antibody titers against the prototype (left) or Omicron variant (right) in BBIBP-CorV/ZF2001 heterologous booster group and BBIBP-CorV/BBIBP-CorV homologous booster group. Neutralizing antibody titer against the Omicron variant in BBIBP-CorV/ZF2001 heterologous booster group and BBIBP-CorV/BBIBP-CorV homologous booster group. c Concentrations of anti-RBD IgG (left) or anti-RBD antibody (right) against the prototype after the third-dose vaccination. The horizontal bars indicate the median concentration, and error bars indicate the inter-quartile ranges.