We found it curious that IDO1 was not identified by this screen considering its significant impact on infection observed in some but not all cell lines (Qin et al., 2017; Bando et al., 2018; Pfefferkorn, 1984; Woodman et al., 1991; Dimier and Bout, 1997; Schmitz et al., 1989). Here, IDO1 is linked to infection.