获得性免疫缺陷综合征(Acquired Immunodeficiency syndrome,简称AIDS或爱滋病)于1979年首先在美国发现,此后有关报告逐年增多,其中90%以上报告集中在美国。1981年夏季美国疾病控制中心(CDC)向医学界公布,说明在美国平素健康的男性同性恋者当中易发生播散性卡波济氏肉瘤(Disseminated kaposis sarco Acquired Immunodeficiency syndrome (AIDS or Acquired Immunity for short) was first discovered in the United States in 1979. Since then, reports have been increasing year by year. More than 90% of the reports are concentrated in the United States. In the summer of 1981, the Centers for Disease Control and Prevention (CDC) announced to the medical community that disseminated Kaposi’s sarcoma is likely to occur among generally healthy gay men in the United States