Respiratory viruses detected using multiplex PCR of nasopharyngeal specimens from n = 310 pneumonia episodes among children 1 to 23 months of age and n = 133 matched control children in Gaborone, Botswana, April 2012 to August 2014.

PCR, polymerase chain reaction; URI, upper respiratory infection; RSV, respiratory syncytial virus; NA, not analyzedaDefined as presence of rhinorrhea, nasal congestion, or cough.bP value estimated using Fisher’s exact test.Respiratory viruses detected using multiplex PCR of nasopharyngeal specimens from n = 310 pneumonia episodes among children 1 to 23 months of age and n = 133 matched control children in Gaborone, Botswana, April 2012 to August 2014.

PCR（polymerase chain reaction，聚合酶链式反应）；URI（upper respiratory infection，上呼吸道感染）；RSV（respiratory syncytial virus，呼吸道合胞病毒）；NA（not analyzable，无法分析）。a 定义为存在流涕、鼻塞或咳嗽症状。b 采用Fisher精确检验估算P值。本研究针对博茨瓦纳哈博罗内地区2012年4月至2014年8月的研究对象，对310例1至23月龄儿童肺炎病例及133例匹配对照儿童的鼻咽拭子标本开展多重PCR检测，以此检出呼吸道病毒。