HLA-B and viral infectious disease: HLA‐B genes have a reported strong association with viral infections,63, 64 including in COVID‐19,65 especially the B7 supertype allele HLA‐B*15:01, which has been associated with asymptomatic SARS‐CoV‐2 infections,66 and HLA‐B*07:02, which is associated with a high degree of pre‐existing cross‐reactive memory T cells.67