一、肺炎支原体感染是常见病过去由于对肺炎支原体认识不足,认为它仅是原发性非典型肺炎的病原,并不多见。如今已有大量临床和实验室资料证明肺炎支原体不仅是肺炎的常见病原,也是急性呼吸道感染常见病原之一。1977年日本7个国立医院308例肺炎的病因分析,病毒性肺炎占27.9%,细菌性肺炎占17.9%,混合型占13%,支原体肺炎占29.2%。1964～1975年美国加州对1483例肺炎进行病毒和支原体分离,357例分离阳性,其中支原体肺炎29.4%,呼吸道合胞病毒25.5%。首都儿科研究 First, Mycoplasma pneumoniae infection is a common disease In the past due to lack of knowledge of Mycoplasma pneumoniae, that it is only the primary cause of atypical pneumonia, and rare. Now a large number of clinical and laboratory data have proved that Mycoplasma pneumoniae is not only a common pathogen of pneumonia, but also one of the common pathogens of acute respiratory infections. In 1977, the etiological analysis of 308 pneumonia in 7 national hospitals in Japan showed that viral pneumonia accounted for 27.9%, bacterial pneumonia accounted for 17.9%, mixed type accounted for 13% and mycoplasma pneumonia accounted for 29.2%. Between 1964 and 1975, 1483 cases of pneumonia were isolated from the virus and mycoplasma in 3583 cases of California, including 29.4% of mycoplasmal pneumonia and 25.5% of respiratory syncytial virus. Capital Pediatric Research