IL2 and tuberculosis: Utilizing this route of delivery enabled the induction of antigen-specific polyfunctional CD4 and CD8 T cells, expressing interferon gamma (IFN-γ), tumor necrosis factor alpha (TNF-α), and interleukin 2 (IL-2), all of which are associated with TB and HIV coinfection, thus potentiating the use of this vaccine in the coinfected cohort (Fig. 3).