对１９９５年１月～５月收治的９５例肺炎患儿采用聚合酶链反应（ＰＣＲ）方法对婴幼儿的鼻咽部分泌物进行沙眼衣原体（ＣＴ）检测，结果阳性１８例（１８．９％），其中３月以内婴儿３０．６％，～６月２２％，～１岁１５％，～４岁４％。可见ＣＴ肺炎以６个月以下最多见。临床表现大多起病缓慢，一般情况尚好，以呼吸增快，阵发性咳嗽为主，病程１４～４０天。１８例中有１０例伴有结膜炎，１２例为产道分娩。 Ninety-five children with pneumonia admitted from January 1995 to May 1995 were tested for CT of nasopharyngeal secretions by polymerase chain reaction (PCR) in 18 children (18.9% ), Of which 30.6% were infants in March, 22% were in June, 15% were in ~ 1 year old and 4% were in ~ 4 years old. Visible CT pneumonia in 6 months following most see. Most of the clinical manifestations of onset is slow, the general situation is good, to breathe faster, paroxysmal cough, duration 14 to 40 days. Ten of 18 patients had concomitant conjunctivitis, and 12 were delivered by birth canal.