Extended Data Fig. 2 |. Correlations of plasma antibody measurements.

a, Normalized AUC for IgG anti-RBD plotted against Pylon IgG anti-RBD index values at 1.3 months. b, Normalized AUC for IgG anti-RBD plotted against Pylon IgG anti-RBD index values at 6.2 months. c, Normalized AUC for IgM anti-RBD plotted against Pylon IgM anti-RBD index values at 1.3 months. d, Normalized AUC for IgM anti-RBD plotted against Pylon IgM anti-RBD index values at 6.2 months. e, Normalized AUC for IgG anti-N plotted against Roche COI values for anti-N total Ig titres at 1.3 months. f, Normalized AUC for IgG anti-N plotted against Roche COI values for anti-N total Ig titres at 6.2 months. g, Anti-N total Ig COI values for 80 individuals at the initial 1.3- and 6.2-month follow-up visit. h, Relative change in anti-N total Ig levels between 1.3 and 6.2 months plotted against the anti-N total Ig levels at 1.3 months. i, Normalized AUC for IgM anti-RBD at 6.2 months plotted against IgM anti-RBD at 1.3 months. j, Normalized AUC for IgG anti-RBD at 6.2 months plotted against IgG anti-RBD at 1.3 months. k, Normalized AUC for IgA anti-RBD at 6.2 months plotted against IgA anti-RBD at 1.3 months. l, Normalized AUC for IgG anti-N at 6.2 months plotted against IgG anti-N at 1.3 months. m, COI values for anti-N total Ig titres at 6.2 months plotted against anti-N total Ig titres at 1.3 months. n, Anti-RBD IgM titres at 1.3 months plotted against anti-N IgG titres at 1.3 months. o, Anti-RBD IgG titres at 1.3 months plotted against anti-N IgG titres at 1.3 months. p, Anti-RBD IgA titres at 1.3 months plotted against anti-N IgG titres at 1.3 months. q, NT₅₀ values at 1.3 months plotted against anti-RBD IgG titres at 1.3 months. r, NT₅₀ values at 6.2 months plotted against anti-RBD IgG titres at 6.2 months. The r and P values were determined by two-tailed Spearman’s correlations.