Figure 2

Distribution of IgG and IgA titers according to sex. SARS-CoV-2 Ab titers are expressed as O.D. from serum samples separated by IgM + HWs (black dots) and IgM − HWs (gray dots) and by sex (male vs female). IgM + or IgM—female versus male Ab titers were compared (continuous lines over series with significant p values) by Mann Whitney test; also, IgM + vs IgM − males and females were also compared separately (discontinued lines over series). Significant p value < 0.05.