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１９９７年１０月对我县３所中学１９３６名学生进行了卡介苗接种疤痕检查与结核菌素（ＰＰＤ）试验，并对结素试验阴性者全部接种卡介苗，现将结果报告如下。调查对象与方法 １．调查对象为我县３所中学部分学生，共１９３６名，其中男生１１４３名，女生７９３名，年龄１?
In October 1997, 1936 students from 3 middle schools in our county were tested for BCG vaccination scar test and tuberculin (PPD) test, and BCG was inoculated to all patients with negative tuberculin test. The results are reported as follows. Survey object and method 1. The surveyed subjects were 3 middle school students in our county, totaling 1936, including 1143 boys and 793 girls, aged 1?