小肠结肠炎耶尔森氏菌(简称耶尔菌)是一种日益受到重视的通过食物和水源致病的重要病原菌。在日本、加拿大和美国已有很多暴发流行的报道。由于分离技术的改进,检出的病例数也不断增加。已有充分证明该菌是动物病的病原菌,最近研究表明该菌在外环境中不仅可以存活而且还可能繁殖,因而认为它是一种食物和水源性的人类肠道病原菌。耶氏菌的可靠的鉴定方法要有一个冗长的过程。许多细菌例如假单胞菌属细菌和肠杆菌 Yersinia enterocolitica (Yersinia pestis) is an increasingly important pathogen that causes disease through food and water. There have been many outbreaks in Japan, Canada and the United States. Due to the improvement of separation technology, the number of detected cases is also increasing. It has been well documented that this bacterium is a pathogen of animal diseases. Recent studies have shown that this bacterium can not only survive but also multiply in the external environment, and thus it is considered as a food and waterborne human enteric pathogen. The reliable identification of Yersinia requires a lengthy process. Many bacteria, such as Pseudomonas and Enterobacter