肠球菌是人类和温血动物肠道内的正常菌群 ,以前一般都认为该属菌对人类无害 ,但近年研究已证实它可引起多种感染 ,属医院感染的主要病原之一。该菌属的某些生化型也可引起食物中毒〔5〕。由于肠球菌在外界环境中抵抗力较强 ,即使在冷冻、干燥、加热食品、环境水中大肠菌群死亡 Enterococcus is a normal flora in the intestine of both human and warm-blooded animals. Previously, it was generally considered harmless to humans. However, recent studies have confirmed that it can cause many infections and is one of the major pathogens causing nosocomial infections. Some of the genus Biochemical may also cause food poisoning 〔5〕. Enterococci in the external environment due to strong resistance, even in frozen, dry, heated food, environmental water, coliform death