Fig. 3

Effector T cells and memory B cells frequency in ∆871 BA.2 and BA.2 breakthrough infected patients. A–C Effector T cells frequency against AS spike (A), AS NP (B), and Omicron spike (C) in ∆871 BA.2 and BA.2 breakthrough infected patients with completion of two doses inactivated vaccine scheme or homologous booster. D–F Effector T cells frequency against AS spike (D), AS NP (E) and Omicron spike (F) in ∆871 BA.2 and BA.2 breakthrough infected adolescents and adults. G–I Memory B cell frequency against AS spike (G), AS receptor binding domain (RBD) (H) and Omicron RBD (I) in ∆871 BA.2 and BA.2 breakthrough infected patients with completion of two doses inactivated vaccine scheme or homologous booster. J–L Memory B cell frequency against AS spike (J), AS RBD (K) and Omicron RBD (L) in ∆871 BA.2 and BA.2 breakthrough infected adolescents and adults. Error bars represent the median (interquartile range [IQR]). Data presented were from 3-independent experiments and analyzed using the two-sided Mann–Whitney U-test