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自1981年发现获得性免疫缺陷综合征(AIDS)以来,疾病控制中心(CDS)已收到1350余例的报告。据统计,死亡率达70％或以上。AIDS以免疫抑制为其特点。这种患者对一些致病因子有高度易感性,这些致病因子在健康人通常不引起严重疾病,但对免疫缺陷患者却具有高度破坏性。尽管并没有完全排除其它可能性,但流行病学研究强烈提示AIDS是由某种感染因子所致。鉴定这种感染因子的努力已有所收获。
Since the discovery of Acquired Immunodeficiency Syndrome (AIDS) in 1981, the Centers for Disease Control and Prevention (CDS) has received more than 1350 reports. According to statistics, the death rate of 70% or more. AIDS is characterized by immunosuppression. This patient is highly susceptible to a number of causative agents that are usually not cause serious illness in healthy people but highly devastating in immunocompromised patients. Although other possibilities are not completely ruled out, epidemiological studies strongly suggest that AIDS is caused by some infectious agent. Efforts to identify this infectious agent have been rewarded.