15例重症乙型流感病人,男8、女7例,年龄5～73岁。均经血清学(补体结合和血凝抑制)试验或/病毒分离确诊。3例在乙型流感发病后7～31天发生流感后细菌性肺炎,其中1例死亡,另外2例作脓胸引流。2例病人在病后2周,因肺部疾病入院,但无细菌感染的证据,其中1例死于乙型流感病毒性肺炎。2例老年男性病人因突然高热和衰竭入院,实验室检查提示可 15 cases of severe influenza B patients, 8 males and 7 females, aged 5 to 73 years. Serological (complement fixation and hemagglutination inhibition) test or / virus isolation were confirmed. Three cases of bacterial pneumonia occurred after 7 to 31 days after the onset of influenza B, of which 1 died and the other 2 as empyema drainage. Two patients were hospitalized 2 weeks after the illness due to pulmonary disease but no evidence of bacterial infection, of which 1 died of influenza B virus pneumonia. Two elderly male patients admitted to hospital due to sudden high fever and failure, laboratory tests suggest