随着计划生育工作的深入开展,优生已成为我国人口政策的一个重要组成部分,特别在当前,危害儿童健康的传染病逐渐减少,儿童智力低下和出生缺陷患病率相对增高,已形成一个急待解决的课题。目前,国内已有过一些关于人群中智力低下和出生缺陷患病情况的调查,并开展了 With the deepening of family planning work, eugenics have become an important part of our population policy. Especially at present, infectious diseases that endanger the health of children are gradually reduced, and the prevalence of mental retardation and birth defects in children is relatively high, which has created an urgent need Problem to be solved. At present, there have been some surveys on the prevalence of mental retardation and birth defects in the population in China, and carried out