What is the most common type of sti?

Chlamydia: Followed by gonorrhea, then syphillis.

Likely HPV: This is often ignored since most males never have symptoms unless they get one of the wart strains. There are more than a dozen strains that are transmitted sexually & some studies cite as many as 70% of college age women have blood evidence of prior infection. Many people go a lifetime with no problems associated problems but some strains are linked to various cancers.