PIP: The Association for Voluntary Surgical Contraception (AVSC) has contributed to the realization of large declines in fertility rate in Brazil, South Korea, Thailand, and Kenya. Each country exhibits unique statistical characteristics with Brazil, South Korea, and Thailand approaching most closely the 2.1 children/woman fertility rate of more developed countries. With 2/3 of married reproductive-age women using some form of family planning, Brazil's fertility rate has dropped from 5.8 in 1970 to 3.3 in 1985. 275 of these women opted for voluntary sterilization accounting for an estimated 16% decline in the fertility rate. Continuing trends in the sterilization rate suggest that almost 60% of Brazilian women will be sterilized by their 40th birthday. South Korea showed strong declines in fertility rate during the period 1968-88 from 5.4 to 1.6. More than 3/4 of married reproductive couples used contraception in 1988, with greater than 42% of these opting for sterilization. Survey data from Thailand in 1985-86 yielded a fertility rate of 2.2. 65.5% of married Thai women used contraceptives, with 29% of this group choosing sterilization. Kenya has realized increased use of family planning by married women over the period 1984-89 from 17% to 27%, with a corresponding decrease in fertility rate from 7.7 to 6.7. Use of sterilization as the preferred method of contraception has risen from 2.6% to 4.7% over the period. AVSC's interventions have included funding and supporting service provider training, counseling seminars, surgical equipment and technical assistance, equipment repair services, informational material development, and the encouragement of greater use of vasectomy.