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近10余年来，普外科感染的病原菌有了很大的变迁，以金黄色葡萄球菌为首位的状况演变为混合的需氧菌和厌氧菌感染占首位，尤其在腹部感染中的大肠杆菌等革兰氏阴性菌与厌氧类杆菌（脆弱类杆菌）为主的混合感染占主要地位。因此对厌氧菌的认识进一步提高了对外科感染的防治水平?
In the past 10 years, there has been a great change in the pathogens of general surgical infections. The situation of Staphylococcus aureus evolved into the first place of mixed aerobic and anaerobic infections, especially in E. coli in abdomen infections Gram-negative bacteria and anaerobic bacilli (Bacteroides fragilis) -based mixed infection predominance. Therefore, awareness of anaerobic bacteria to further enhance the prevention and treatment of surgical infection level?