一、艾滋病及其危害自 1981年西方国家首次发现艾滋病以来 ,该病就以异常迅猛的速度蔓延到 2 0 0多个国家和地区 ,到目前为止全球累计艾滋病感染者达 30 0 0 - 4 0 0 0万 ,其中 90 %在发展中国家。非洲是艾滋病流行最严重的地区 ,专家预测 2 1世纪的亚洲将成为又一个严重的流行 AIDS and its harms Since the first AIDS epidemic in western countries in 1981, the disease has spread to more than 200 countries and territories at an unusually rapid rate. So far, the cumulative number of AIDS-infected persons in the world has reached 30 0-40 0 0 million, of which 90% are in developing countries. Africa is the area with the most serious HIV / AIDS epidemic. Experts predict that Asia in the 21st century will become another serious epidemic.