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1978年沈阳市皇姑区某幼儿园4～6岁儿童40名做结素试验。结素强阳性率高达20％。随后对该幼儿园全部儿童作胸部透视,结素强阳性儿童拍胸片,确诊肺门淋巴结结核二名。为了寻找传染源,对幼儿园全体职工进行胸部透视,发现痰涂片阴性活动性肺结核病人一名。为了解传染源对幼儿的影响,又对另一托儿所的全部职工及儿童作了胸部透视,未发现活动性肺结核,对该所4～6岁儿童作结素试验进行对比。两组儿童均使用长春生物制品研究所生
In 1978, Huanggu District, Shenyang City, a kindergarten 4 to 6-year-old children 40 knot test. Knot strong positive rate of up to 20%. Followed by the nursery for all children chest radiography, strong positive children chest X-ray film, diagnosed hilar lymph node tuberculosis two. In order to find the source of infection, nurses on the chest for all workers and found that sputum smear negative active tuberculosis patients. In order to understand the impact of sources of infection on young children, a chest fluoroscopy was conducted on all workers and children of another nursery school. No active pulmonary tuberculosis was found. Both groups of children used Changchun Institute of Biological Products