HIV, an incurable autoimmune disease and is passed through blood & other bodily fluids.
Herpes is transferred through skin to skin contact, even when no symptoms are present.
Chlamydia is the most commonly reported STD and is known to show no symptoms.
Gonorrhea is a common bacterial STD that can cause complications if not treated early.
Hep A, B, & C aren’t always obtained through sex, but they can be transmitted that way.
Syphilis is known to be hard to diagnose and to cause serious long-term complications.