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. 2021 Nov 16;12:778679. doi: 10.3389/fimmu.2021.778679

Figure 2.

Figure 2

Specific antibody and T-cell responses in older and in young adults before (D0) and 3 months (D90) after the first injection of BNT162b2. (A) Anti-S1 IgG, (B) serum neutralization assay against live virus, and (C) S1-reactive T cells (ELISpot) in COVID-19-naïve and in COVID-19-recovered participants. Wilcoxon matched-pairs signed rank test was used for paired comparisons. * p-values < 0.05; ** p-values < 0.01; **** p-values < 0.0001. CTL, IFNγ SFCs, interferon gamma spot-forming cells.