In all macaques an increase of IFN-γ–producing cells was associated with a smaller bacteremia-AUC relating to a reduced bacterial biomass (p = 0.014, Spearman’s rank correlation), a prolonged TTB, relating to a delayed onset of bacterial dissemination (p = 0.019, Spearman’s rank correlation), and a shorter duration of bacteremia relating to an improved control of bacteremic dissemination (p = 0.026, Spearman’s rank correlation). The gene discussed is IFNG; the disease is bacterial infectious disease with sepsis.