近年来伤寒在某些地区仍然流行。其临床症状、病程经过与以往病例不完全相同。有些老年医生纷纷指出,近年来伤寒病例多不典型。青年医生亦常谈到,伤寒病例与书本叙述不尽相同临床常遇到本应确诊的病例,以致拖延治疗不能及时处理,甚致发生肠出血、肠穿孔,仍然不能确诊。唯一的理由是症状不典型、血液培养阴性,或肥达氏 In recent years, typhoid fever is still prevalent in some areas. Its clinical symptoms, course of disease after the previous cases are not exactly the same. Some elderly doctors have pointed out that in recent years, typhoid fever cases are not typical. Young doctors also often mentioned that cases of typhoid fever are not the same as those described in the book. Clinically, they often encounter problems that should be diagnosed. As a result, delayed treatment can not be handled promptly, and even intestinal hemorrhage and intestinal perforation still occur. The only reason is atypical symptoms, negative blood cultures, or Widal’s