单增李斯特菌是一种能够引起人畜共患的食源性致病菌,属李斯特菌属,在自然界中分布广泛〔1〕。食用了被单增李斯特污染的食物后可以引起李氏杆菌病,使人和动物患脑膜炎、败血症、流产等,死亡率可达20%～30%〔2〕。为完成国家食源性疾病监测网的监测任务,掌握吉林省食品中单核细胞增生李斯特菌的污染状况,于2009年7-8月对动物性水 Listeria monocytogenes is a food-borne pathogenic bacteria that can cause zoonotic diseases, is a genus Listeria, widely distributed in nature 〔1〕. Listeria monocytogenes can be caused by the consumption of food contaminated with Listeria monocytogenes, causing meningitis, sepsis and miscarriage in humans and animals, with a mortality rate of 20% to 30% [2]. In order to complete the monitoring task of the national foodborne disease monitoring network and grasp the contamination status of Listeria monocytogenes in food in Jilin Province,