CD79A and influenza: Unlike humoral response, capable of neutralizing activity, CMI is able to prevent virus replication and decrease the time for recovery.7, 8 CD4+ follicular helper T (Th) lymphocytes in presence of antigen‐presenting cells (APCs), such as dendritic cells (DCs) and influenza antigens, induce the differentiation of naïve B cells into IgA‐secreting plasma cells (PCs).