“The route of HPV transmission is primarily through skin-to-skin or skin-to-mucosa contact. Sexual transmission is the most documented, but there have been studies suggesting non-sexual courses.
The horizontal transfer of HPV includes fomites, fingers, and mouth, skin contact (other than sexual). Self-inoculation is described in studies as a potential HPV transmission route, as it was certified in female virgins, and in children with genital warts (low-risk HPV) without a personal history of sexual abuse. Vertical transmission from mother to child is another HPV transfer course” [1].
Right, but do the vaccines help against the strains of HPV that are transmitted via non-sexual contact? The vaccine being 9-valent implies (to me, a layman) that strains need to be targeted fairly specifically in order for vaccination to be effective.
Yes. While direct genital contact is the highest probability way to spread it, any skin-skin, skin-mucosa, skin-object-skin contact can potentially spread it. Consider how much you trust others to wash their hands after using the restroom. Low probability, but possible.
You’ve got a low probability of getting polio, but there’s no reason not to be vaccinated if you can.
Even if you already have a strain, there are multiple types. In fact, people who got a vaccine early on, should consider an updated shot for more complete protection.
The protection from the vaccines lasts (probably) a lifetime, and HPV is quite widespread because it is: very easily communicable, and infections linger for potentially long periods of time without any obvious symptoms
Something like 80% of people are sexually active at all will be infected with HPV at some point. You may not have been sexually active, but your future partners may have been. I personally have a friend who went through stage 4 cancer contracted from her (now ex) husband.
So, of course not literally everyone needs to take it, assess your own risks, but it's quite an easy, highly effective vaccine: don't overthink it.
Rape, you might become sexually active in the future, and although sexual transmission is the most common way, there are some other ways to get infected.
Unless you're never sexually active (meaning, you eventually do have sex), it's worthwhile getting since there is a risk to yourself if you get infected.