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肺结核是通过呼吸道传播的慢性传染病,痰涂片阳性(简称涂阳)肺结核患者是主要的传染源。与涂阳病例密切接触的人群,包括与涂阳肺结核患者直接接触的家庭成员、同事、同学等,极易受传染和发病,接触的时间越长,造成接触者感染的危险也就越大。一名涂阳肺结核患者如果得不到正规治疗,1年中可传染10~15人,被感染者一生中发生结核病的可能性约为5%~10%[1]。因此,对涂阳肺结核患者的密
Pulmonary tuberculosis is a chronic infectious disease transmitted through the respiratory tract. Patients with positive sputum smear (smear-positive) pulmonary tuberculosis are the main source of infection. People in close contact with smear-positive cases, including family members, colleagues and students who are in direct contact with smear-positive pulmonary tuberculosis patients, are highly susceptible to infection and morbidity. The longer the exposure, the greater the risk of contagious infections. A smear positive pulmonary tuberculosis patient can get 10 to 15 people within one year if they can not get regular treatment. The probability of getting tuberculosis in an infected person’s life is about 5% -10% [1]. Therefore, smear-positive tuberculosis patients