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厌氧菌是指无氧条件下生长繁殖的一些细菌,分兼性厌氧菌与专性厌氧菌,前者在有氧与无氧条件下都可生长,如大肠杆菌、伤寒杆菌、痢疾杆菌等。后者在绝对无氧条件下才能生长、繁殖,如绿脓杆菌、结核杆菌等。按其结构特征又可分为有芽胞与无芽胞厌氧菌。在临床上以无芽胞厌氧菌特别脆弱类杆菌致病性较强,占厌氧菌感染的80％。厌氧菌的分布:厌氧菌是体内正常菌群的一部分,广泛存在于机体的体表和外通的腔道中,如肠道中厌氧菌占正常肠道菌群的99％,
Anaerobic bacteria refers to the growth and reproduction of some bacteria in anaerobic conditions, facultative anaerobic bacteria and obligate anaerobic bacteria, the former can be grown under aerobic and anaerobic conditions, such as Escherichia coli, Salmonella typhi, Shigella Wait. The latter under the conditions of absolute anaerobic growth, reproduction, such as Pseudomonas aeruginosa, Mycobacterium tuberculosis and so on. According to their structural characteristics can be divided into spores and non-spores anaerobic bacteria. Clinically non-spore anaerobic Bacteria Bacteria particularly pathogenic, accounting for 80% of anaerobic infections. Anaerobic bacteria distribution: anaerobic bacteria is part of the normal flora, widespread in the body surface and the passage of the cavity, such as intestinal anaerobic bacteria accounted for 99% of the normal intestinal flora,