CD79A and influenza: It has been reported that influenza/COVID-19 vaccination during pregnancy has positive outcomes for the mother–infant dyad, namely providing passive immunity to the infant before birth by transplacental transfer of vaccine-induced IgG antibodies and after delivery via the maternal milk, which contains specific antibodies (mainly S-IgA) that are transferred to the newborn/infant during breastfeeding [32,33,34,35,36,37].