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1989年春我们用间接血凝试验,在开封市选不同方位有代表性的开封县袁楼、桑寨和尉氏县邢庄、大营4个村人群和城市住院孕妇进行弓形虫感染情况调查。共检测血清2499份,抗体阳性93份,阳性率为3.
In the spring of 1989, we used an indirect hemagglutination test to investigate the prevalence of Toxoplasma gondii in four village groups and pregnant women in cities of Xingzhuang and Kuangzhai, Xingzhuang and Kuangzhai in Weifang, representative of different locations in Kaifeng. A total of 2499 serum samples were tested, and 93 were positive for the antibody. The positive rate was 3.