<qa>  What is the name of the type of T-cells that are infected with HIVWhile HIV mainly infects mature T-cells it can also infect newly produced or naïve T-cells. These infected naïve T cells may then act a viral reservoir even in patients with undetectable viral loads. Understanding when and how these cells are infected is important because it could help us to understand why patients fail therapy even if they have a persistently undetectable viral load. 