儿科重症监护病房患儿博卡病毒感染的临床分析

Clinical analysis of bocavirus infection in PICU patients

目的：研究儿科重症监护病房中呼吸道感染患儿博卡病毒感染的临床特点。方法收集2010年6月至2011年12月因急性呼吸道感染入住本院儿科重症监护病房的患儿咽拭子标本450份。应用多重PCR技术对博卡病毒和呼吸道常见病毒进行检测，博卡病毒PCR阳性结果进行基因测序确定，并分析阳性病例的临床资料。结果450份咽拭子标本中，检出博卡病毒30例（检出率6.7％）。30例博卡病毒阳性标本中，16例为单独感染，占总阳性标本的53.3％；14例为混合感染，占总阳性标本的46.7％。根据小儿危重病例评分，16例单独感染患儿中13例为＞80分（非危重），2例为80～71分（危重），1例为＜70分（极危重）；14例混合感染患儿中12例为＞80分（非危重），2例为80～71分（危重）；单纯感染和混合感染所致疾病的危重程度差异无统计学意义（ P＞0.05）。结论博卡病毒能够引起儿童重症呼吸道感染，混合感染不会增加疾病的严重程度。

Objective To analyze the clinical features of PICU patients with bocaviral infection.Methods Nasopharyngeai aspirates specimens were collected from 450 children who were admitted to PICU with acute respiratory tract infection in our hospital from June 2010 to December 2011 .Multiplex PCR was applied to detected human bocavirus and emerging respiratory virus.Bocavirus positive PCR results were sequenced and the clinical data of the positive cases were analysed.Results Human bocavirus positive samples were detected in 30 cases（6.7%） among 450 throat swab specimens.Human bocavirus as a single infection was found in 16 cases （53.3%）.Mixed infections were found with in 14 cases（46.7%） of 30 positive samples.According to pediatric critical illness score,there were 13 cases of non-serious,2 cases of serious and 1 case was extremely serious in 16 single infections cases.There were 12 cases of non-seriuo s and 2 serious cases in 14 mixed infections. There were no statistically significant differences between single and mixed infections in the severity of the disease（ P〉0.05 ） .Conclusion Bocavirus can cause severe respiratory tract infections.Mixed infections does not increase the severity of the disease.