呼吸道病毒是婴幼儿急性呼吸道感染最常见的病原体,症状可能是轻微的呼吸道疾患或是致命的病毒性肺炎,亦是引起住院婴幼儿医院感染的常见原因[1-3]。呼吸道病原体,习惯上是指一群能侵犯呼吸道的病原体,具有感染力强,传播快,发病 Respiratory viruses are the most common pathogens of acute respiratory infections in infants and young children. The symptoms may be minor respiratory diseases or deadly viral pneumonia and are a common cause of nosocomial infections in hospitalized infants and young children [1-3]. Respiratory pathogens, traditionally refers to a group of pathogens that can invade the respiratory tract, with strong infectivity, rapid transmission, onset