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作者调查了联邦德国,奥地利和瑞士三个国家的77个结核病实验室内获得性结核杆菌感染情况和发病率。这些实验室研究结核杆菌已有20年左右的历史,既有确诊的病例、也有经结核菌素皮肤试验的可疑者。按照职业病的规定来确诊是否感染,结果在3349人中有88人(2.63%)报告感染,约为普通人群的100倍以上,结果详见表1。作者认为有如下危险因素。
The authors investigated the prevalence and incidence of acquired TB infection in 77 TB laboratories in the three countries of the Federal Republic of Germany, Austria and Switzerland. Mycobacterium tuberculosis has been studied in these laboratories for about 20 years, both in confirmed cases and suspicious of tuberculin skin tests. In accordance with the provisions of occupational diseases to confirm the infection, the results of 3349 people, 88 (2.63%) reported infection, about 100 times more than the general population, the results shown in Table 1. The authors consider the following risk factors.