BCR and COVID-19: We further explored the presence of PA-N-CoV1804 in other published COVID-19 B-cell receptor (BCR) datasets (Bernardes et al, 2020; Galson et al, 2020; Kuri-Cervantes et al, 2020; Nielsen et al, 2020; Niu et al, 2020; Schultheiss et al, 2020; Montague et al, 2021Preprint; Notarbartolo et al, 2021; Stephenson et al, 2021).