CD8A and COVID-19: More specifically, a significant reduction of CD8 T cells as well as of conventional dendritic cells (DCs) and, to some extent also, plasmacytoid DCs was observed, both when investigating the total cohort and when only assessing patients with severe COVID-19 (ICU patients) stratified for aIFN-Ab positivity (Figure 2H and 2I, and Supplementary Figure 1E and 1F).