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Post-vaccination antibody responses correlate negatively with age. Spearman correlation analysis between age and S-RBD IgG levels before the second dose (B2D, n=111), 1 week (1wA2D, n=106), 6 weeks (6wA2D, n=89), 12 weeks (12wA2D, n=90), and 6 months (6mA2D, n=84) after the second dose. Spearman correlation coefficient and exact p-values are given.
