- how effectiveness is the HPV injection? Will the person be imune to that types of HPV the injection has? Or at least much more difficult to acquire it

- if someone already acquired HPV in some point of life and cleared and don’t  present any more warts, is this person imune to that type of HPV, or will not be likely reinfected?

- I took the injection 10 years ago, should I get renovation?

Thanks.

Understand that everybody (at least 90%) gets genital HPV, often several times. The HPV vaccine is 100% effective against the particular HPV types it covers, but that's only 2, 4, or 9 types, depending in the particular vaccine given. I would guess, but don't know, that the quadrivalent vaccine (4 HPV types) was in use in Brazil 10 years ago. You had to receive at least two and preferably 3 doses to be protected. Those 4 types account for 90% of genital warts and 65-70% of HPV-related cancers, but there is no protection against the 100+ types of HPV that can be sexually transmitted. Anyway, you can assume you have had HPV and could be carrying one or more strains now. Happily, the large majority never cause health problems and most never cause symptoms or any visibile abnormality.

Condoms are not very effective against HPV, for the reason experienced by your friend:  skin contact above the condom. For any single exposure, there is probably a 50-90% reduction in risk of catching HPV, but over the long run, regular condom users get HPV just about as often as those who never use condoms. This is one reason immunization is so important. The current vaccine in use in most countries covers 9 HPV types, including the same that cause most warts plus 7 types that account for 90% of cancers caused by HPV. If you didn't receive the nonavalent (9 type) vaccine in the past or are uncertain, you could get it now; discuss with your doctor. However, be aware that although vaccination is 100% effective against those 9 types, that's only if not previously exposed to them. It has no effect on any types already acquired.

But also understand that having and getting HPV is normal and most persons have no health problem from it. At a personal level, if I were in your situation, I wouldn't feel a need for immunization. Among other things, you likely are at pretty low risk for new infections going forward. New HPV becomes uncommon after age 35-30 and quite rare soon after that.

All in all, HPV is usually no big deal. But since you're worried, it would make sense for your to discuss the pros and cons of immunization with your doctor. Based on your previous questions, ti seems you have seen one or more sophisticated STD experts who should be able to advise you.

I hope this information is helpful. Let me know if anything isn't clear. I would also recommend you do some wider reading about HPV. Excellent inforrmation is available from the US Centers for Disease Control and Prevention (www.cdc.gov/std) and the sponsor of this forum, the American Sexual Health Association (www.ashasexualhealth.org).

HHH, MD

Many thanks.

But now I’m starting to get worried from the episode 10years ago...

Would I still be contagious? Couldn’t I consider myself cleared after 10 years with no recurrence?

Can I have sex with no worries of infecting someone after 10 years of successfully   treatment?

Thanks

Immunization (re-immunization) might slightly reduce the chance of re-detection of HPV, but the research is conflicting. Any such effect is minor, and there are no data on whether it has any effect on the already low risk of reappearance of warts. I would not recommend re-vaccination for these reasons. The main reason you might consider it is for prevention of the 5 HPV types not covered by the quadrivalent vaccine, but that's a pretty minor benefit.

See my suggestions above about websites with these and more details about HPV.