Human respiratory syncytial virus (RSV) causes acute respiratory infection in individuals of all age groups. It is the most common pathogen identified in infants and young children with acute lower respiratory infection. Although most infants and young children experience mild, cold-like symptoms, some infants develop severe lower respiratory tract disease such as pneumonia and bronchiolitis that may result in an emergency department visit or hospitalization.

中文翻译：

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呼吸道合胞病毒预防的最新进展：过去、现在和未来。

人类呼吸道合胞病毒（RSV）会在所有年龄段的个体中引起急性呼吸道感染。它是患有急性下呼吸道感染的婴幼儿中最常见的病原体。尽管大多数婴儿和幼儿都会出现轻微的感冒样症状，但有些婴儿会出现严重的下呼吸道疾病，例如肺炎和细支气管炎，可能会导致急诊室就诊或住院治疗。