Fig. 6: Correlations of antibody, neutralization levels and COVID-19 subject characteristics.

a Neutralization (NT50) of COVID-19 plasma correlated with S-RBD IgG (nā=ā113), S-RBD IgA (nā=ā113), S-RBD IgM (nā=ā40), and nucleocapsid IgG (nā=ā113). b Correlation of NT50 with S-RBD-specific IgG subclasses; IgG1 (nā=ā113), IgG2 (nā=ā74), IgG3 (nā=ā74), and IgG4 (nā=ā74). c Correlation of S-RBD IgG (nā=ā115), nucleocapsid IgG (nā=ā115), S-RBD IgA (nā=ā115), and NT50 (nā=ā113) with age. Two-tailed Spearmanās was used to determine statistical significances.