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肺结核的主要传播途径是通过排菌的肺结核病人咳嗽、打喷嚏、大声说笑时,把带有结核菌的飞沫喷洒在空气中,被健康人吸入肺内而引起发病。人的一生可以多次受到结核菌感染,当机体抵抗力强时可以不发病。但在儿童时期,由于抵抗力弱,容易受到结核菌感染,并且很容易在肺内繁殖,然后进入淋巴及血液循环,引起儿童时期的肺门淋巴结核和重症血行播散型肺结核。也有一部分儿童由于身体抵抗力较强,感染结核后,使进入机体的结核菌大部分被消
Tuberculosis is the main route of transmission through the tuberculosis bactericidal cough, sneeze, loudly joking, the droplets with Mycobacterium tuberculosis sprayed in the air, was inhaled into the lungs by healthy people and cause disease. My life can be repeatedly infected with Mycobacterium tuberculosis, when the body is strong resistance can not disease. However, in childhood, due to weak resistance, susceptible to TB infection, and easily multiply in the lungs, and then enter the lymphatic and blood circulation, causing childhood hilar lymph nodes and severe hematogenous disseminated tuberculosis. There are also some children due to strong body resistance, infection of tuberculosis, the majority of tuberculosis into the body was eliminated