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1984年5月中旬我们在矿务局机关小学接种卡介苗过程中,发现该校一年级二班自然感染率高达39.2％。经查该班51名学生中患活动性肺结核者6人,患病率11.3％。故认为是一次小范围暴发流行。兹报告如下:
In mid-May 1984, during the course of BCG vaccination in the primary school of the Mines Bureau, we found that the natural infection rate of the first grade and the second grade of the school was as high as 39.2%. The investigation of class 51 students with active tuberculosis in 6, the prevalence rate of 11.3%. It is considered a small outbreak. I hereby report as follows: