获得性免疫缺陷综合征(AIDS)是近年来新发现的一种免疫性疾病。其临床特点是不明原因的免疫异常,伴发Kaposi肉瘤和其它一些淋巴结病,有严重机会性感染(卡氏肺囊虫病等)。近年来由于诊断水平的提高,在AIDS高危人群中也发现了一些轻症或不典型病人,称为AIDS前期(Pre-AIDS)或AI-DS相关病(AIDS-related complex)简称ARS。对AIDS的流行病学和免疫病理学特 Acquired immunodeficiency syndrome (AIDS) is a newly discovered immunological disease in recent years. Its clinical features are unexplained immune abnormalities associated with Kaposi’s sarcoma and other lymphadenopathy, with severe opportunistic infections (Pneumocystis carinii, etc.). In recent years, due to the improvement of diagnosis, some patients with mild or atypical pneumonia have also been found in the high-risk population of AIDS. They are called Pre-AIDS or AI-related complex (ARS). Epidemiology and immunopathology of AIDS