青少年的性传播疾病（STDS）是一个严重问题。在美国，约半数青少年有过性行为，且低龄组青少年的性行为率呈增高趋势。有世行为年龄组中，尤以青少年组患STDS的比例最高。美国每年有250万青少年患STDS，约相当6个有性行为的青少年中有1人患STDS。对此高感染率的原因探讨时，应 Sexually transmitted diseases in adolescents (STDS) is a serious problem. In the United States, about half of adolescents have had sexual intercourse, and adolescents in younger age groups have shown an increasing sexual activity. World Bank for the age group, especially adolescent group had the highest proportion of STDS. There are 2.5 million adolescents suffering from STDS in the United States each year, and 1 in about 6 sexually active adolescents has STDS. The reason for this high infection rate should be explored