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艾滋病是由艾滋病病毒(HIV)引起的一种人类免疫缺陷性疾病。 HIV的传播方式主要有三种:(1)性接触(包括异性性接触和同性性接触),(2)暴露于被艾滋病病毒感染的血液和血制品,或者接受艾滋病病毒感染的器官或精于;(3)母婴传播。据世界卫生组织估算,1990年初,全世界约60万成人艾滋病病例,大约有500～1000万人感染上了HIV,到
AIDS is a human immunodeficiency disease caused by HIV. There are three main forms of HIV transmission: (1) sexual contact (including heterosexual and homosexual contact), (2) exposure to HIV-infected blood and blood products, or exposure to HIV-infected organs or sperm; (3) mother-to-child transmission. According to World Health Organization estimates, at the beginning of 1990, about 600,000 adult AIDS cases in the world, about 5 to 10 million people were infected with HIV,