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采用聚合酶链反应（PCR）检测了呼吸道感染患儿458例，检出肺炎支原体（MP）－PCR阳性而诊断为MP感染者76例，占16．6％。本文资料表明婴幼儿MP感染趋势明显，临床表现复杂多样，可伴有多系统损害。MP－PCR检测在该病的临床诊断研究中有广阔的应用前景。比较了PCR方法与间接血球凝集试验对MP感染的检出率，统计学处理表明间接血凝试验在临床应用中仍具有较高使用价值。
Polymerase chain reaction (PCR) was used to detect 458 cases of respiratory tract infection in children, detected positive Mycoplasma pneumoniae (MP) -PCR and diagnosed as MP infection in 76 cases, accounting for 16.6%. The information in this paper shows that infants and young children with significant trends in MP infection, clinical manifestations of complex and diverse, may be associated with multiple system damage. MP-PCR detection in the clinical diagnosis of the disease has broad application prospects. The detection rate of MP infection by PCR and indirect hemagglutination test was compared. Statistical analysis showed that indirect hemagglutination test still has high value in clinical application.