IL17A and infection: Combined with the observation that IL-17-knockout mice exhibited reduced hydrosalpinx, as well as the consistent association of IL-17 production with genital C. trachomatis infection (Jha et al., 2011; Andrew et al., 2013; Masson et al., 2015), it is tempting to speculate that the activity of IL-17-producing cell types may exacerbate Chlamydia-associated fibrosis downstream of the host cell response to infection.