In the 21st century, tuberculosis has resurged as a result of AIDS. The course of treatment for tuberculosis takes at least six months. Usually after a month of treatment, 99 % of the pathogens have been eliminated, but the remaining 1 % are critical.
21 世紀，結核病在愛滋帶動下捲土重來，結核病的療程至少需 6 個月，通常治療一個月後，病人身上 99％的病菌就可被消滅，但是殘留下來的 1％才是關鍵。