CD8A and COVID-19: In COVID-19, very devastative inflammatory responses accompanied by an increase in the level of pro-inflammatory serum cytokines and chemokines, as well as an increase in neutrophil and macrophage count and the decrease in the endogenous antiviral response from CD8+ T cells, NK cells, and gammaDelta T cells (Jaiswal et al., 2020; Potter et al., 2020).