呼吸道合胞病毒（ＲＳＶ）感染能使免疫缺陷儿童的发病率和病死率上升，该文通过对不同研究对象的分析，观察下呼吸道重度ＲＳＶ感染在免疫缺陷和免疫正常儿童中的不同表现。 对象与方法　前瞻性研究１９９７年３月～１９９９年３月南非某医院下呼吸道ＲＳＶ感染的患儿。人类免 Respiratory syncytial virus (RSV) infection can increase the morbidity and mortality of children with immunodeficiencies. This paper examines the different manifestations of different subgroups of patients with RSV infection in immunocompromised and immunocompromised children. Subjects and Methods Prospective study of children with RSV infection of a lower respiratory tract in a hospital in South Africa from March 1997 to March 1999. Human immunity