A previous study by our group [19] have shown also high levels of IFN-γ in cervical washes of women with recurrent chlamydial infections compared to women with primary chlamydial infections and has demonstrated that high secretion of pro-inflammatory cytokines as IL-6, IFN-γ and TNF-α lead to acute inflammation and can thus cause reproductive disorders. Here, IFNG is linked to chlamydia trachomatis infectious disease.