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中国是世界22个结核病高负担国家之一,结核病患病人居世界第2位,估算全国有450万活动性肺结核病人,有5·5亿人已受结核菌感染〔1〕。结核菌感染率是反映涂阳肺结核病人在人群中蔓延程度的一项指标,尤其是0~14岁的儿童感染率是反映涂阳患病率变化趋势的最灵敏指标。为了解大连市
China is one of the 22 countries with a high burden of tuberculosis in the world. Tuberculosis patients rank second in the world. It is estimated that there are 4.5 million active tuberculosis patients in the country and 550 million people have been infected with tuberculosis [1]. Mycobacterium tuberculosis infection rate is a reflection of the extent of smear-positive pulmonary tuberculosis in the population of an indicator of the spread, especially 0 to 14-year-old children’s infection rate is the most sensitive indicator of the prevalence of smear positive trends. To understand Dalian