Cross-reactive antibody against human coronavirus OC43 spike protein
correlates with disease severity in COVID-19 patients: a retrospective study
https://www.tandfonline.com/doi/full/10.1080/22221751.2021.1905488
Antibodies to the SARS-CoV-2 receptor-binding domain
that maximize breadth and resistance to viral escape
https://www.biorxiv.org/content/10.1101/2021.04.06.438709v1.full