Extended Data Fig. 1: Serological testing in Cohorts 1 and 2.

a-b, SARS-CoV-2 RBD IgG titration curves in HD (n = 36, a) and sCOVID-19 (n = 66, b). c, Plasma IgG antibody titers to SARS-CoV-2 RBD in HD (n = 36), mCOVID-19 (n = 25) and sCOVID-19 (n = 66) (Extended Data Table 1). The data are shown as endpoint titers normalized to ELISA reciprocal dilution as in a and b. The dotted line indicates the limit of detection. In the boxplots, the center is drawn through the median of the measurement, and the lower and upper bounds of the box correspond to the first and third quartile. The whiskers go down to the smallest value and up to the largest. Statistical significance was determined by the one-way ANOVA followed by Tukey’s multiple-comparison. Related to Fig. 1.