CD8A and influenza: In influenza virus-infected C57BL/6 mice, NP366-374- and PA224-233-specific CD8+ T-cell responses are dominant [61], while the immune-dominance of M158-66–specific cytotoxic T cells has been well established in HLA-A2+ individuals [59], supporting the approach of including M1 in a universal influenza vaccine with broad cross-protective immunity.