患儿 ,男 ,14岁 ,因发热半月 ,伴咳嗽一天 ,于 2 0 0 1年 2月2 7日入院。入院前半月无明显诱因发热 ,体温在 3 9～ 40℃之间 ,伴有畏寒。入院前一天伴阵发性咳嗽。既往无特殊病史。家族中母亲 3年前患黄胆型肝炎已治愈。入院时查体 :Ｔ3 9 2℃ ,Ｐ96 ｍｉｎ ,Ｒ2 4 ｍｉｎ ,体 Children, male, 14 years old, were admitted to hospital on February 27, 2001 because of fever and a half month with cough. There was no predisposing fever in the first half of admission, the body temperature was between 39 and 40 ° C, accompanied by chills. The day before admission with paroxysmal cough. No special medical history. 3 years ago, the mother of the family suffering from hepatitis B has been cured. Physical examination on admission: T3 9 2 ℃, P96 min, R2 4 min, body