孟连傣族拉祜族佤族自治县位于云南省西部,与周边国家相邻的共有29个民间通道,2个边境口岸,不少边民到境外寻找经济收入,流动较频繁。自1991年首次从跨国卖淫回归妇女中检出艾滋病病毒(HIV)感染者后,感染者逐年增加,到2007年底共检测48 440人,检出HIV阳性者527例,阳性率为1·09 Menglian Dai The Lahu and Wa Autonomous County are located in the western part of Yunnan Province. There are 29 private corridors and two border crossings adjacent to the neighboring countries. Many border residents go abroad to seek economic income and move more frequently. Since the first detection of HIV infection among women returning from transnational prostitution in 1991, the number of infected persons increased year by year. By the end of 2007, a total of 48,440 people were detected, and 527 were HIV-positive, with a positive rate of 1.09