80年代后期,曾经被抗生素几乎抑制的结核病(TB)又卷土重来。目前,每年有200万以上病人死于TB,在传染性疾病中仅次于艾滋病。令人担忧的是,耐药性菌株的出现。美国于90年代早期开始重视TB流行,当时发现大约有9％的病例对两种或多种抗结核药耐药,该次流行历时数年,花费了1亿多美元才得以控制。但全球性的耐药性TB In the late 1980s, tuberculosis (TB), which had been nearly inhibited by antibiotics, again came back. Currently, more than 2 million people die of TB each year, second only to AIDS in infectious diseases. Worryingly, the emergence of drug-resistant strains. When the United States began to attach importance to the TB epidemic in the early 1990s, about 9% of the cases were found to be resistant to two or more anti-TB drugs. The sub-national epidemic took years and cost more than $ 100 million to be controlled. But global resistance to TB