BCR and COVID-19: Remarkably, within months of the pandemic, multiple research groups reported the discovery of neutralizing antibodies from the BCR repertoires of COVID-19 patients (Cao et al., 2020; Hansen et al., 2020; Ju et al., 2020; Pinto et al., 2020; Robbiani et al., 2020; Seydoux et al., 2020; Wang et al., 2020; Zost et al., 2020; Baum et al., 2021).