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. 2023 Sep 12;14:5624. doi: 10.1038/s41467-023-41342-2

Fig. 7. Humoral and cellular responses at the waning period in individuals previously infected before Omicron in relation to reinfection.

Fig. 7

Distribution of IgG levels (a) and IgA levels (b), both represented as log10(AU/ml) (n = 59 and n = 55 biologically independent samples in the not reinfected and reinfected groups, respectively); neutralizing antibody levels (c), represented as log10(IU/ml) (n = 57 and n = 55 biologically independent samples in the not reinfected and reinfected groups, respectively); and IFN-γ levels (d), represented in log10(mIU/ml) (n = 7 and n = 5 biologically independent samples in the not reinfected and reinfected groups, respectively); during the waning period (day 15 after the second dose and day -1 before the third dose) in individuals infected before Omicron who did not get a second SARS-CoV-2 infection (Not reinfected) and those who did get a second SARS-CoV-2 infection (Reinfected). Green and yellow colors represent not reinfected and reinfected individuals, respectively. Circles represent observed data. Data reported as the median and interquartile range (box), whiskers represent 1.5 times the interquartile range. Dashed horizontal line indicates the threshold for assay positivity. P-values were calculated using Mann–Whitney U test (two-sided), where p < 0.05 was considered significant. Source data are provided as a Source Data file.