CD79A and COVID-19: A link between IgA and Tscm responses has not, to our knowledge, been reported, but as Tscm cells have been linked to favorable long-term durability of COVID-19 and yellow fever vaccine responses (48, 49), it is conceivable that persisting Tscm cells may somehow facilitate crosstalk between the cellular and humoral arms of immunity to promote mucosal immune responses.