The mechanisms underlying infertility caused by Chlamydia trachomatis infection include direct injury, allergic response and autoimmunity caused by the cytotoxic effects of metabolites.

• 沙眼衣原体则可由直接损伤、代谢产物的细胞毒性作用引起的过敏反应和自身免疫等多种机制引起不孕不育。