小肠结肠炎耶尔森氏菌(下称耶氏菌)是近年来在国际上引起注意的肠道致病菌。人感染后,可引起胃肠炎、结节性红斑、反应性关节炎及其它并发症。在自然界中,发现有许多动物肠道内携带此菌。近几年,国外一些学者从生肉、水产品、奶和奶制品及蔬菜中曾分离出耶氏菌,并有过多次暴发流行报道。因而该菌目前已被认为是世界上重要的传染病和食物中毒病原菌之一。国内自1980年以来,部分省区相继在猪体和腹泻病人粪便 Yersinia enterocolitica (hereinafter referred to as Yersinia) is an intestinal pathogen that has drawn international attention in recent years. Human infection can cause gastroenteritis, erythema nodosum, reactive arthritis and other complications. In nature, many animals have been found to carry this bacteria in the gut. In recent years, some foreign scholars have isolated Yersinia from raw meat, aquatic products, milk and dairy products and vegetables, and have reported many outbreaks. Thus the bacteria is now considered as one of the world’s major infectious diseases and food poisoning pathogens. Since 1980, some provinces and autonomous regions have successively excreted pigs and diarrhea patients