IL17A and chlamydia infectious disease: This is in agreement with other studies showing that the cytokines IFNγ and IL-17 lead to recruitment and/or activation of innate cells.13 IL-17 has been shown to be important for establishing a Th1 response in a murine model of genital Chlamydia infection and in the Herpes simplex virus 2 animal model.13,19,20 Whether IL-17 plays a similar role during a C.t.