mythbuster graphic Sexually transmitted infections (STIs) are communicable diseases passed from one person to another during sexual activity. STIs can be transmitted during vaginal, anal, or oral sex, and sometimes by close skin-to-skin contact.

A common fear among people is that STIs can be passed in public places, such as through contact with toilet seats. While it is theoretically possible that some STIs could be passed from person-to-person via a public toilet seat, it is extremely unlikely that you will become infected in this manner.