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1995年10月～1996年2月用微量颗粒凝集法检测肺炎患儿494例，肺炎支原体（MP）抗体阳性者148例，阳性率为30．0％。示婴幼儿MP感染比例有增高趋势，95年秋冬季沈阳地区有MP感染流行。婴幼儿和儿童期MP肺炎的临床表现不同，年龄愈小，MP感染的临床表现愈不典型，因而易漏诊、误诊。儿童期MP肺炎表现较典型容易诊断，但病程长，肺外并发症多，尤以肺外表现为首发症状时易误诊。
From October 1995 to February 1996, 494 children with pneumonia were detected by microparticle agglutination test, and 148 were positive for Mycoplasma pneumoniae (MP) antibody. The positive rate was 30.0%. Infants and young children showed an increasing trend of MP infection, 95 autumn and winter Shenyang MP infection prevalence. MP pneumonia in infants and children with different clinical manifestations, the younger, the more clinical manifestations of MP infection is not typical, and therefore easy to missed diagnosis, misdiagnosis. MP pneumonia in childhood more typical performance of easy diagnosis, but longer duration, extrapulmonary complications, especially when the first symptoms of extrapulmonary manifestations easily misdiagnosed.