目前,将人类致病的衣原体分为沙眼衣原体、鹦鹉热衣原体和肺炎衣原体3种,均可引起下呼吸道感染。本文关于衣原体引起下呼吸道感染症及临床表现进行讨论。 衣原体感染的概念 衣原体长时间被分为1科2属2种(沙眼和鹦鹉热衣原体),1989年Grayston、Wang首先提出肺炎衣原体这一新种,最近报告鹦鹉热衣原体中可能存在一种新种。过去倾向于将衣原体归于病毒,目前的概念则倾向于专性细胞内寄生性球菌。衣原体 At present, the human pathogenic chlamydia is divided into Chlamydia trachomatis, Chlamydia psittaci and Chlamydia pneumoniae 3, can cause lower respiratory tract infection. This article discusses the chlamydia caused by lower respiratory tract infection and clinical manifestations are discussed. The concept of Chlamydia infection Chlamydia long time is divided into two families and two genera 2 (trachoma and chlamydia psittaci), 1989, Grayston, Wang first proposed Chlamydia pneumoniae new species, recently reported that there may be a new species of Chlamydia psittaci . In the past, chlamydia has tended to be attributed to viruses, and current concepts tend to be obligate intracellular parasites. Chlamydia