１病例资料男，４０岁。主因发热６天，以上呼吸道感染收住院。入院前１个月在西双版纳及中缅边境旅居半个月，回京途中寒战发热，体温３９．５℃，伴乏力、腰酸、头痛，按感冒治疗无效。既往体健，院外两次查疟原虫均阴性。查体：体温３９．９℃，脉搏１２０／ｍｉｎ，呼... 1 case information male, 40 years old. The main cause of fever for 6 days, more than respiratory tract infection admitted to hospital. One month before admission, he lived in Xishuangbanna and the border with China and Burma for half a month. After returning to Beijing, he was chilled and warmed. His temperature was 39.5 ℃. He was accompanied by fatigue, backache and headache. Past physical health, twice outside the hospital were negative for Plasmodium. Physical examination: body temperature 39.9 ℃, pulse 120 / min, call ...