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提高人口素质,优生是一个重要环节。优生有广义与狭义两种。狭义的优生是指遗传对胎儿质量的影响,也是最根本的方面。在现阶段,胎儿若患遗传性疾病,绝大多数尚无有效措施可改变其预后。广义的优生还包括各种环境因素对胎儿质量的影响,如风疹病毒、巨细胞病毒、弓形体等引起的宫内感染、放射线、致畸药物、缺氧、产伤等。本文讨论仅限于遗传因素问题。
Improve the quality of the population, eugenics is an important part. Eugenics have broad and narrow sense of two. Narrow eugenics refers to the impact of genetic on the quality of the fetus, but also the most fundamental aspect. At this stage, if the fetus has a genetic disease, the vast majority have no effective measures to change its prognosis. Generalized eugenics also include the impact of various environmental factors on the quality of the fetus, such as intrauterine infection caused by rubella virus, cytomegalovirus, toxoplasmosis, radiation, teratogenic drugs, hypoxia, and birth trauma. The discussion in this article is limited to genetic issues.