Recent studies demonstrated that γδ T cells exhibit Th1-, Th2-, Th17-, and Treg-like features [46] and can produce corresponding cytokines, such as the inflammatory cytokines IFN-γ and TNF-α [48] and the anti-inflammatory cytokines IL-10 [49, 50], TGF-β [45], and IL-17, in various infection and autoimmunity models [51–53]. This evidence concerns the gene IL17A and infection.