Figure 3

Anti-SARS-CoV-2 antibody titers before and after injection of the three boosters during 6-month follow-up. Median and 95% confidence intervals are shown on the diagram. P-values were obtained using pairwise for Friedman test. Asymptotic significances (2-sided tests) are displayed, with a type I error of 0.05. Significance values have been adjusted for multiple comparisons using Bonferroni correction.