病例为13岁女孩,发热两周而入院。体检:脾轻度肿大、质软。血红蛋白11克%,白细胞6100,嗜酸性粒细胞阴性,血沉40毫米/小时,胸片正常,血培养阴性,肥达氏反应阳性,诊断为伤寒。每天用氯霉素2克治疗,于住院第10天症状解除后出院。4天后再度出现发热,主诉左侧胸痛,胸片示左侧胸腔积液,胸穿证实脓性胸水,培养发现伤寒杆 The case was a 13-year-old girl who was admitted to hospital after two weeks of fever. Physical examination: mild spleen enlargement, soft. Hemoglobin 11%, white blood cells 6100, eosinophils, erythrocyte sedimentation rate 40 mm / hour, normal chest, blood culture negative, Widal’s reaction was positive, the diagnosis of typhoid fever. Chloramphenicol every day with 2 grams of treatment, in the hospital after the first 10 days to relieve the symptoms were discharged. 4 days after the re-emergence of fever, complained of left chest pain, chest X-ray showed pleural effusion, pleural pleural effusion pleural effusion, found that the typhoid rod