艾滋病于1985年传入中国,并在高危人群中广泛传播〔1〕,并且已经由高危人群向一般人群扩散。艾滋病在我国已从扩散期进入快速增长期,严重危害着人民的健康和社会的发展〔2〕。目前,艾滋病病毒感染人数逐年增多,艾滋病疫情形势十分严峻。在艾滋病传播的3个途径(性传播、血液传播和母婴传播)中,无 AIDS was introduced into China in 1985 and widely spread among high-risk groups [1] and has spread from high-risk groups to the general population. AIDS has entered a period of rapid growth in our country from a period of proliferation, which has seriously endangered people’s health and social development (2). At present, the number of HIV infections has been increasing year by year, and the AIDS epidemic situation is very grim. Of the three routes of transmission of AIDS (sexual transmission, blood transmission and mother-to-child transmission), none