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目的了解肺炎支原体(mycoplasma pneumoniae,MP)感染与儿童呼吸道疾病之间的关系。方法用颗粒凝集法检测2006年7月至2007年6月我院儿科住院病房464例呼吸道感染患儿的MP抗体效价,比较不同月份、不同年龄及不同临床表现的患儿的MP-IgM阳性率。结果464例患儿中211例MP-IgM为阳性,占住院总人数的45%,一年中12月、1月是MP感染的高峰季节,其阳性率分别为60%和58.3%(χ2=20.03,P<0.05);随着年龄增长,MP感染阳性率增高,10~14岁儿童MP阳性率高达75%,而1岁以下婴儿MP阳性率仅为13.3%(χ2=72.6,P<0.001);支气管哮喘患儿中MP-IgM阳性率最高,为64.5%(χ2=24.5,P<0.001)。结论呼吸道感染患儿肺炎支原体抗体阳性率高,该病原体是目前儿科感染的常见病原体。
Objective To understand the relationship between mycoplasma pneumoniae (MP) infection and respiratory diseases in children. Methods The antibody titer of MP in 464 children with respiratory tract infection in pediatric inpatient department of our hospital from July 2006 to June 2007 was detected by using particle agglutination method. The MP-IgM positive rate of children with different age, clinical manifestations and clinical features were compared rate. Results 211 out of 464 children were positive for MP-IgM, accounting for 45% of the total number of hospitalized patients. The monthly incidence of MP infection in December and January was 60% and 58.3%, respectively (χ2 = 20.03, P <0.05). With the increase of age, the positive rate of MP infection increased. The positive rate of MP in children aged 10 ~ 14 was 75%, while the positive rate of MP in children under 1 year old was only 13.3% (χ2 = 72.6, P <0.001) ); The highest positive rate of MP-IgM in children with bronchial asthma was 64.5% (χ2 = 24.5, P <0.001). Conclusion The positive rate of Mycoplasma pneumoniae antibody in children with respiratory tract infection is high. This pathogen is the common pathogen of pediatric infection.