全球许多国家始终担心类似致死性鼠疫一类疾病入侵人类。传染病的发生和蔓延没有国界,也没有海洋间隔,这个事实要求各国和国际加强协作,预防和控制传染病的蔓延。19世纪中期,欧洲各国发生了2起重大霍乱流行造成了巨大伤亡,再次证明了传染病流行没有国界。为了更好地控制传染病暴发,1851年在法国巴 Many countries in the world have always been concerned about the invasion of human beings by a group of diseases like the plague of lethal plague. The fact that the occurrence and spread of infectious diseases have no boundaries and no maritime separation calls for a strengthened national and international collaboration to prevent and control the spread of infectious diseases. In the mid-nineteenth century, two major cholera epidemic in all European countries caused tremendous casualties, proving once again that there was no national boundary in the epidemic of infectious diseases. In order to better control the outbreak of infectious diseases, in 1851 in France Pakistan