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Decay of the anti-SARS-CoV-2 antibodies after the second and third doses. The decay half-lives of neutralizing antibody (A), anti-RBD total antibody (B), and anti-Spike IgG (C) were estimated using a linear mixed effects model with censoring of titers above the positive threshold. Due to the small amount of data, the decay half-lives of anti-Spike IgM and anti-Spike IgA failed to fit the model.
