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我县连续几年伤寒暴发,为摸清伤寒暴发后人群中伤寒慢性带菌情况,我们开展了慢性带菌者调查。现报告如下:一、调查对象和方法1.对象:①病后组:1990、1991年伤寒临床治愈后3个月以上者。②无病史组:近年无伤寒病史的健康体检者。2.方法:先用伤寒 vi-PHA 检测血清中vi 抗体进行初筛。滴度≥1∶40者为初筛阳性。对 vi 抗体阳性者采大便(3次)分离培养伤寒沙门氏菌。
For several years in our county typhoid outbreaks, in order to find out the chronic infection of typhoid in the crowd after typhoid outbreak, we conducted a survey of chronic carriers. Now report as follows: First, the object of investigation and methods 1 object: ① sick group: 1990,1991 typhoid fever after clinical cure more than 3 months. ② no history group: In recent years, no history of typhoid health examination. 2. Methods: The first detection of vi-PHA typhoid serum antibody with vi screening. Titers ≥ 1:40 were positive for primary screening. Salmonella typhimurium was isolated and stool collected (3 times) against vi antibody positive.