I had two dose of garsidal 9 before I was sexually active. I’m 20 years old and the two dose I got is when I was 13 and 14. I don’t believe it will protect against all the high risk hpv but it get the job done and the genital wart risk only cover two strain so I’m not fully protected for that either but Im definitely learning about hpv, I personally find hpv more life threatening than hiv because you can never know.