在本世纪初,美国有一名烹调技术高超的女厨师,人们称她为玛丽小姐。她先后曾为7个家庭当过厨师,然而,她就像瘟神一样,无论在谁家都会带来灾难。仅仅5年的服务,这7个家庭中就有26人先后患了伤寒病。在她整个工作的14年中,由她直接或间接传播而引起伤寒病流行共8次,患病和死亡人数达1350余 At the beginning of this century, the United States had a skilled cook woman who called her Miss Mary. She has worked as a chef for seven families, yet she is like a god of plague who will bring disasters no matter who. Just five years of service, 26 of these seven families have contracted typhoid fever. During her 14 years of work, her epidemic of typhoid fever was caused directly or indirectly by her a total of 8 times, causing over 1350 illnesses and deaths