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本调查对全省部分地区1990、91年采集的疑似乙脑病人和健康人血清,利用间接免疫荧光法进行了检测,核实了临床诊断,其符合率为49.20%,病人平均几何抗体滴度急性期为1:138,恢复期为1:347,病程的长短与抗体滴度的高低有一定相关关系。首次估算出我算乙脑隐性感染IgG抗体GMT为72.69。其抗体滴度95%可信上限值为1:316,由此认为,现症病人的单份血清IgG1:320以上者结合临床症状可以确诊。经一个流行季节,有8.22%的人获得新的感染,抗体阳性率有32.60%升高,显隐感染之比为1;1003,半岁以后至15岁以下隐性感染阳性率最低,提出在我省预防接种年令组应向后推至15岁。男女之间同样对乙脑病毒易感,两者无差异。
In this survey, serums of suspected JE and healthy people collected from 1990 to 1991 in some areas of the province were detected by indirect immunofluorescence, and the clinical diagnosis was verified with a coincidence rate of 49.20%. The average geometric antibody titers of patients were acute Period of 1: 138, recovery period of 1: 347, the length of the course of the antibody titer has a certain correlation. For the first time, I calculated that I counted JE recessive IgG antibody GMT was 72.69. The antibody titer of 95% confidence limit of 1: 316, which shows that patients with single disease serum IgG1: 320 or more can be diagnosed with clinical symptoms. After a epidemic season, 8.22% of new infections were acquired, the positive rate of antibody was 32.60%, the ratio of latent infection was 1; 1003, the lowest positive rate of latent infection after half age to 15 years old was proposed The province vaccination year group should be pushed back to 15 years old. The same between men and women on the JE virus susceptibility, no difference between the two.