获得性免疫缺陷综合征(Acguired Immune Deficiency Syndrome,AIDS)是1979年新发现的一种独特的免疫缺损性疾病。最早发现在美国,后相继在加拿大、欧洲、中非洲、亚洲、和澳大利亚等地发现。该病常见于高危人群的同性恋者、静脉滥用毒性药物及海地移民。其临床特征是细胞免疫功能受损、T细胞免疫缺陷、其辅助性T细胞/抑制性T细胞比率降低,因此对病毒及多种条件致病菌有高度敏感性,常伴有肺卡氏囊虫病或伴发kaposi’s肉瘤及其他肿瘤。其传播方式是通过密切接触AIDS患者的分泌物、排泄物、血液、粘膜和组织,或经常 Acguired Immune Deficiency Syndrome (AIDS) is a newly discovered unique immunodeficiency disease in 1979. First discovered in the United States, one after another in Canada, Europe, Central Africa, Asia, Australia and other places found. The disease is common in homosexuals at high risk, intravenous drug abuse and Haitian immigrants. Its clinical features are impaired cellular immune function, T-cell immunodeficiency, and a decrease in the ratio of helper T cells / suppressor T cells, and are therefore highly susceptible to viruses and a variety of opportunistic pathogens, often associated with pulmonary C: Insect disease or associated with kaposi’s sarcoma and other tumors. It is transmitted through close contact with secretions, excretions, blood, mucous membranes and tissues of AIDS patients, or often