Stricter levels of control (i.e., set points <1,000 copies/mL) were less common.8 Across humans and NHPs, consistent trends have emerged: particularly in settings in which the size of the reservoir is small and/or ART was started early in the course of infection, low rates of HIV/SIV control can be observed after stopping ART, and this control may be mediated, at least in part, by an effective virus-specific CD8+ T cell response.2,3,7,12,14,15. Here, CD8A is linked to infection.