自1896年肥达氏开创伤寒血清凝集试验反应(以下简称肥达氏反应)以来,沿用至今已80余年,对伤寒的诊断起了重要作用。但近年来由于伤寒的不典型,加以某些长期发热的其他疾病在其早期固有临床症状尚不具备,而肥达反应却呈阳性,遂忽视了其他化验及动态的观察病情,故常在早期误诊为伤寒。1979年美国临床医学刊登Richard等文章提出伤寒血清 Since 1896, Widal’s pioneering typhoid serum agglutination test response (hereinafter referred to as Widal’s reaction), has been used for more than 80 years, the diagnosis of typhoid fever has played an important role. However, in recent years due to typhoid fever atypical, to some other long-term fever in other diseases inherent in its early clinical symptoms are not yet available, but the response was up, and then ignored the other tests and dynamic observation of the disease, it is often misdiagnosed in the early For typhoid fever. 1979 American clinical published Richard and other articles made typhoid serum