沙眼衣原体（ＣＴ）逐渐成为小婴儿及新生儿肺部感染的重要病原体。由于小婴儿衣原体感染可产生严重的并发症以及它的远期作用，因此逐渐得到重视。我们采用聚合酶链反应（ＰＣＲ）方法对１９９７年７月～１２月入院的２１７例６个月以内的小婴儿肺炎患儿进行鼻咽分沁物（... Chlamydia trachomatis (CT) has gradually become an important pathogen of infant and neonatal pulmonary infections. As small chi-bile chlamydial infection can have serious complications and its long-term effects, it gradually get attention. We use polymerase chain reaction (PCR) method in 1997 July to December admission of 217 cases of infantile pneumonia within 6 months of nasopharyngeal Qinqin (...