二十世纪九十年代,世界卫生组织宣布,曾经肆虐的天花在地球上已经绝迹。医学界非常乐观地预言,人类将在二十世纪末最终消灭各种传染病。但是,事态的发展完全出乎人们的意料,古老的疾病并没有被消灭,鼠疫、霍乱、狂犬病、血吸虫病、结核病死灰复燃;新的怪病如艾滋病、疯牛病、非典、禽流感……一个接一个冒出。这些 In the 1990’s, the World Health Organization announced that the once-ravaged smallpox had disappeared on Earth. The medical community is very optimistic to predict that mankind will eventually eliminate all kinds of infectious diseases by the end of the twentieth century. However, the development of the situation completely out of people’s expectations, the ancient disease has not been eliminated, plague, cholera, rabies, schistosomiasis, tuberculosis resurgence; new strange diseases such as AIDS, mad cow disease, SARS, bird flu ... ... one by one Emerge These ones