IFNL1 and COVID-19: This included IFNα1 and IFNβ1 (Figs. 2A and B and 3A and B, respectively), IFN-II, such as IFNγ (Figs. 2C and 3C, respectively), and IFN-III, except for IFNλ1, which was expressed in COVID-derived PBMCs from critical COVID-19 patients (Fig. 2D), but not in COVID-derived monocytes (Fig. 2D).