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艾滋病(acquired immunodeficiency syndrome,AIDS)是由人类免疫缺陷病毒(human immunodefi-ciency virus,HIV)引起的一种传染病,自1981年美国报道首例AIDS[1]至今的29年间,HIV已经在全世界范围广泛蔓延。据联合国艾滋病规划署(UN-AIDS)和世界卫生组织(WHO)于2009年11月联合发布的《2009年全球艾滋病流行趋势报告》显示,
Acquired immunodeficiency syndrome (AIDS) is an infectious disease caused by the human immunodeficiency virus (HIV). Since the first 29 years of HIV coverage in the United States in 1981, World wide spread. According to the 2009 Global AIDS Prevalence Report jointly released by UN-AIDS and the World Health Organization in November 2009,