MMWR Morb Mortal Wkly Rep. 1994 Apr 1;43(12):213-6.
Although outbreaks of Escherichia coli O157:H7 have been linked to consumption of contaminated ground beef, the organism is rarely isolated from the implicated meat. In addition, most epidemiologic investigations of illness associated with E. coli O157:H7 infections have been directed at restaurant-associated outbreaks, and the sources of infection for sporadic cases rarely have been identified. In July 1993, three cases of culture-confirmed E. coli O157:H7 infection among persons residing in a small community in California were traced to consumption of hamburger purchased from a local grocery store; E. coli O157:H7 was isolated from that meat. This report summarizes the investigation of these cases by local and state public health officials.
虽然大肠杆菌O157:H7的疫情暴发与食用受污染的绞碎牛肉有关，但很少能从涉事肉类中分离出这种病菌。此外，大多数与大肠杆菌O157:H7感染相关疾病的流行病学调查都针对与餐馆有关的疫情暴发，散发病例的感染源很少能被确定。1993年7月，加利福尼亚一个小社区的三名居民经培养确诊感染了大肠杆菌O157:H7，追溯发现他们食用了从当地杂货店购买的汉堡包；从该肉类中分离出了大肠杆菌O157:H7。本报告总结了当地和州公共卫生官员对这些病例的调查情况。
