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. 2022 Sep 8;7(17):e161045. doi: 10.1172/jci.insight.161045

Figure 1. Association of SARS-CoV-2–specific IgG levels with age.

Figure 1

(A) Anti–RBD IgG levels (binding antibody units [BAU]/mL) in participants > 60 years old (red) and those < 60 years old (blue) before SARS-CoV-2 vaccination (PRE), 3 weeks after the first dose (1D), and 2 months after the second dose (2D). (B) Correlation of anti–RBD IgG levels with age in all the study participants after the first dose (left) and after the second dose (right). Mann-Whitney U, Wilcoxon, and Spearman tests were used (n = 54). Friedman test was applied in A (>60-year-old, ****P ≤ 0.0001; <60-year-old, ****P ≤ 0.0001).