The term sexually transmitted disease is used to cover the more
than 25-30 infectious organisms that are spread through sexual
activity. Sexually Transmitted Infections (STIs) are almost
always spread from person to person by sexual activity. These
infections are most easily spread by vaginal or anal
intercourse, and sometimes by oral sex. Some STIs can also be
spread through blood, particularly among intravenous (IV) drug
users who may be sharing drug equipment (needles, syringes, or
“works”). In addition, pregnant women with STIs may pass their
infection to infants in the uterus (womb), during birth, or
through breast-feeding. Most people with STIs have no symptoms.
Without treatment these diseases can lead to major health
problems such as not being able to get pregnant (infertility),
permanent brain damage, heart disease, cancer, and even death.
If you think you have been exposed to a sexually transmitted
disease, you and your sex partner(s) should visit a health
clinic, hospital or doctor for testing and