IFNG and infection: There were no differences in the total frequency of circulating NK cells (Figure S6A) between the two groups and similar to non-recurrent individuals (Figure 7C), cytotoxicity and cytokine-induced IFN-γ production upon re-stimulation with iBP ex vivo strongly correlated with CD160 expression at 28-day and 3-month follow-up in individuals with recurrent infection (Figure S6B).