HLA-A and COVID-19: To investigate the ability of COVID-19 mRNA vaccination to elicit SARS-CoV-2-specific CD8+ T cells and maintain epitope-specific memory T cells, we analyzed HLA-A*24:02-restricted spike epitope-specific CD8+ T cells in individuals who received two doses of the Pfizer-BioNTech BNT162b2 mRNA vaccine.