关键词: 结核, 肺；传染病控制；公共卫生

Abstract: The infection source is the root cause of the tuberculosis epidemic， which is still severe at present. More worse， drugresistant tuberculosis is prevalent all over the world. Eliminating the infection source is the key to tuberculosis control. A number of measures including the implementation of the national TB control programs， the legislation for TB infection source control， early detection of the infection source， standardizing the chemical treatment of tuberculosis， improving selfprotection of medical workers are important weapons of eliminating the infection source of TB.

Key words: tuberculosis, pulmonary;communicable disease control, public health