Due to the highly diverse nature of CDR3, only a few consensus sequences were identified, of which two CDR3 sequences of TRA were shared in CD8+ T cells of two-week convalescent COVID-19 patients (Figure 4A), as well as four CDR3 sequences of TRA and five CDR3 sequences of TRB that were shared in CD8+ T cells of six-month convalescent COVID-19 patients (Figure 4B,C). This evidence concerns the gene CD8A and COVID-19.