
Chlamydia
A common sexually transmitted infection that may not produce symptoms, Chlamydia affects people of all ages, and is most common in young women.

Gonorrhea
A sexually transmitted bacterial infection that, if untreated, may cause infertility. Babies of infected mothers can be infected during childbirth.

Trichomoniasis
Among the most common sexually transmitted infections, Trichomoniasis causes a foul-smelling vaginal discharge, genital itching, and painful urination in women.