获得性免疫缺陷综合征(Acguired immune deficiency syndrome,AIDS)简称爱滋病,是近年来新发现的一种以后天获得性免疫缺陷为特征的病毒性传染病。自从1981年美国正式报告第一例AIDS以来,病例急剧增多,至今已有127个国家和地区报告发现AIDS病例。至1987年2月止全世界向世界卫生组织报告的AIDS病例共计42,120例,其中有27,000例在美国,AIDS病毒携带者估计为1～2百万人,AIDS一年病死率为50％,三年病死率为90％,人类正面临AIDS挑战。 Acguired immune deficiency syndrome (AIDS) is a kind of viral infectious disease characterized by acquired immunodeficiency in recent years. Since the first case of AIDS officially reported by the United States in 1981, the number of cases has dramatically increased. So far, 127 cases of AIDS have been reported in 127 countries and territories. By the end of February 1987, 42,120 AIDS cases were reported to the World Health Organization worldwide, of which 27,000 were in the United States, the estimated number of AIDS virus carriers was 1-2 million, the annual AIDS death rate was 50%, and the three The annual fatality rate is 90%. The human being is facing the AIDS challenge.