Although γδ T cell-derived IL-17 has played a more prominentrole in L. monocytogenes41, M. tuberculosis81, F. tularensis82, and Mycobacterium bovis Bacillus Calmette-Guérin 83 infections, Th17 cells as well as CD8 + cells are also involved inthe antigen-specific production of IL-17 at the site of infection 84. Here, IL17A is linked to infection.