CD79A and COVID-19: Furthermore, there is a preferential isotype-switching toward IgA response in plasmablasts and plasma cells from COVID-19 patients (Figure 2A), as reported previously (Sosa-Hernandez et al., 2020; Bernardes et al., 2020; Galson et al., 2020; Zeng et al., 2021; Sterlin et al., 2021).