There is an emerging AIDS catastrophe in Cambodia unilike any seen outside sub-Saharan Africa. Cambodia has already surpassed Thailand as Asia's most infected country, and in less than half the time it took Thailand to get there. The rate of HIV in pregnant women is about 2.6 percent. The World Health Organization has said Cambodia can expect 12,000 new AIDS patients this year and next, for a total of 40,000 by the turn of the century.