获得性免疫缺陷综合征(AIDS)是近几年发现的一种预后极差的恶性传染病。死亡率很高,一般于发病2～3年后有70%以上死亡。根据美国疾病控制中心报道已发病1,410例,白种人占57.4%,黑人占21.6%,西班牙血统人占14.3%,海地人占5.6%,有4例为亚洲血统人。本病在法国、荷兰、丹麦、比利时和英国等西欧诸国也在蔓延,在16个国家共报告了103例。目前在世界范围内此病患者数目仍在不断增加,约每日发病4～5例。 Acquired immunodeficiency syndrome (AIDS) is a malignant disease with a very poor prognosis found in recent years. Mortality is high, usually in the incidence of 2 to 3 years after more than 70% of deaths. According to the U.S. Centers for Disease Control and reporting, 1,410 cases have been reported, 57.4% were Caucasians, 21.6% were Black, 14.3% were Hispanic, Haitians 5.6% and 4 were Asian descent. The disease is also spreading in Western European countries such as France, the Netherlands, Denmark, Belgium and the United Kingdom, with a total of 103 reported in 16 countries. Currently in the world the number of patients is still increasing, about 4 to 5 cases of daily incidence.