最近美国一起大肠杆菌0157:H7感染暴发被追查到系苹果汁在作祟,另一起环孢子虫病暴发则与树莓有关。这些由食品携带的病原菌频频袭击人类的事件,引起了公众和医务卫生界的关注。这两起暴发以及最近几年食品传播的其它感染的流行,使人们集中注意于15年前即已开始的这些疾病流行病学方面的明显变化。这种变化不仅表现为威胁人类健康的 The recent U.S. outbreak of E. coli 0157: H7 infection was traced to lines of apple juice at work, while the other outbreak of cyclosporidiosis was associated with raspberry. The frequent attacks on humans by food-borne pathogens have aroused the public and medical and health concerns. Both of these outbreaks and the prevalence of other infections that have spread through food in recent years have focused attention on the dramatic changes in the epidemiology of these diseases that began 15 years ago. This change manifests itself not only as a threat to human health