结核病是一种慢性传染病,呼吸道传播是本病的主要传染方式,因早期大多没有明显症状,容易被忽略。随着社会的发展,城市化进程的加快,人口大量流动给结核病的传播提供了有利条件。我国在全球22个结核病高负担国家居世界第二位,2012年的发病人数和死亡人数均居法定疫情报告传染病的首位[1]。2010年全国第五次结核病流行病学抽样调查结果显示,20~25岁和75~80岁两 Tuberculosis is a chronic infectious disease, respiratory transmission is the main mode of transmission of the disease, because most of the early no obvious symptoms, easily overlooked. With the development of society, the accelerated process of urbanization and the massive population flow, favorable conditions are provided for the spread of tuberculosis. China ranks second in the world in 22 countries with high TB ​​burden. In 2012, the number of the victims and the number of deaths ranked first in the reported epidemic of legal epidemics [1]. The fifth national TB epidemiological survey in 2010 showed that 20 to 25 years old and 75 to 80 years old two