伤寒是急性传染病中病程最长罹患率很大的疾病,在传染病防治工作中占很重要的地位;而细菌学诊断中的病原菌培养,则是临床与预防工作中不可缺少的中心环节。伤寒病的初期,症状和其他传染病很相类似,短期中难以区别,因此只有靠培养来碓定诊断,也是早期治疗伤寒的重要根据。另外,在病人症状消失后,也须作多次的细菌培养,待粪便中没有伤寒杆菌的存在时,方可出院,这样出院后,才不致于成为伤寒的带菌者。在伤寒的预防工作上,细菌培养是发现带菌者 Typhoid fever is a disease in which the longest duration of illness in acute infectious diseases is very high. It plays an important role in the prevention and control of infectious diseases, and the cultivation of pathogens in bacteriological diagnosis is an indispensable central link in clinical and preventive work. In the early stages of typhoid fever, the symptoms are very similar to other infectious diseases. In the short term, it is difficult to distinguish between them. Therefore, it is only necessary to rely on training to determine the diagnosis, which is also an important basis for the early treatment of typhoid fever. In addition, after the patient’s symptoms have disappeared, multiple bacterial cultures must be performed. Only when there is no typhoid bacillus in the feces can they be discharged from the hospital. After discharge from the hospital, they do not become carriers of typhoid fever. In typhoid prevention work, bacterial culture is found to be carriers of bacteria