CD40LG and infection: There were signficant correlations between total anti-RBD binding (DABA) and both IgM and IgG to total spike and S1 (Supplementary Figures 5A-D) during the acute infection phase (<21 days post-symptom onset), which became weaker or not significant during convalescence (>21 days post-symptom onset) for IgG, but not IgM.