sexually transmited disases
Sexually transmitted diseases (also called STDs, or STIs for sexually transmitted infections) are infections that can be transferred from one person to another through sexual contact. According to the Centers for Disease Control and Prevention, there are over 15 million cases of sexually transmitted disease cases reported annually in the United States. Adolescents and young adults (15-24) are the age groups at the greatest risk for acquiring an STD, with 3 million becoming infected each year.
STDs can have severe consquences, especially in women, if not treated. Some can lead to pelvic inflammatory disease, which can cause infertiliy,while others may even be fatal. STDs can be prevented by avoiding from sexual activity, and to a certain extent, some contraceptive devices,such as condoms.

bravenet.com