The HPV vaccine for boys is Gardasil 9, a safe shot that prevents future infection with the HPV types behind most genital warts and several cancers, including throat cancer, which now outranks cervical cancer in the US. It works best given before any sexual exposure, and it protects against more than 90% of HPV-caused cancers American Cancer Society.
of HPV-attributable cancers
| Item | Value |
|---|---|
| Currently infected | ~42 million |
| New infections / yr | ~13 million |
| Clear within 2 years | ~90% |
| Vaccine prevents | >90% — of HPV-attributable cancers |
What HPV does to boys and men
HPV is the most common sexually transmitted infection there is CDC. It spreads during vaginal, anal, and oral sex, and it doesn't need penetration: close skin-to-skin contact of the genital area is enough. Nothing short of vaccination fully protects against it.
People lump together two very different problems. Low-risk types (6 and 11) cause genital warts. High-risk types (16, 18, and others) cause cancers. The warts types don't cause cancer, and the cancer types rarely cause warts. In most cases, about 9 out of 10, HPV clears on its own within two years with no health problems.
For boys and men, the cancer stakes are real and often overlooked. HPV causes over 90% of anal cancers and about 70% of throat (oropharyngeal) cancers NCI. Oral sex can carry HPV to the mouth and throat. HPV-related throat cancer has now overtaken cervical cancer as the most common HPV-driven cancer in the US, and it's far more common in men.
How to prevent HPV — and how well each method works
Three tools matter, and they aren't equal. Vaccination is the only one that prevents infection across the board. Condoms reduce transmission but don't eliminate it. Screening doesn't prevent infection; it catches precancer early in people who can be screened.
- Vaccination is the strongest protection: given at the recommended ages, the HPV vaccine can prevent more than 90% of HPV-caused cancers, and Gardasil 9 is about 98% effective against the precancers caused by HPV 16 and 18.
- Condoms give partial protection only, because HPV can infect skin a condom doesn't cover.
- Cervical screening protects people with a cervix by catching precancer early, but there is no equivalent routine HPV screen for boys and men.
Condoms and their limits
Condoms cut HPV transmission and protect against plenty of other infections, so they're worth using. But HPV lives on genital skin a condom doesn't cover: the base of the penis, the scrotum, the perineum. Contact with those areas can still pass the virus. Condoms lower the odds without closing the door, so the vaccine matters even for someone who uses them consistently.
Why there's no routine HPV test for boys and men
HPV tests are not recommended to screen men, adolescents, or women under age 30. There is no approved swab or blood test to tell a healthy man whether he carries HPV, and a positive result wouldn't change anything you'd do. Even for diagnosing warts, HPV testing isn't used; the diagnosis is visual, and a lab result doesn't confirm warts or guide treatment CDC STI guidelines.
Anal screening is the one nuanced exception. CDC's 2021 guidance found the evidence insufficient to recommend routine anal Pap tests even for men who have sex with men or people with HIV. After the 2022 ANCHOR trial showed that treating high-grade anal lesions reduced anal cancer in people with HIV, some specialty groups now suggest periodic anal Pap for high-risk patients where high-resolution anoscopy is available, but that's targeted rather than blanket. If you have HIV or other anal-cancer risk factors, ask a clinician whether it applies to you. For testing on everything else, here's when to test after exposure, and you can get tested for the STIs that do have reliable tests.
The vaccine: what's actually in the shot
The vaccine used in the US today is Gardasil 9, which protects against nine HPV types: 6, 11, 16, 18, 31, 33, 45, 52, and 58 CDC Pink Book. Types 16 and 18 cause about 66% of cervical cancers; the five additional high-risk types it covers (31, 33, 45, 52, 58) cause about another 15%. Types 6 and 11 cause more than 90% of genital warts, so one shot series covers both the cancer and the warts problem.
Older versions covered less ground. The original quadrivalent Gardasil hit four types (6, 11, 16, 18) and Cervarix covered two (16, 18). Since 2016, only Gardasil 9 has been distributed in the US, so today's shot protects against more cancer-causing types than the earlier ones. The table below shows the difference.
| Vaccine | HPV types covered | Available in US now? |
|---|---|---|
| Cervarix (bivalent) | 16, 18 | No |
| Gardasil (quadrivalent) | 6, 11, 16, 18 | No (discontinued since 2016) |
| Gardasil 9 (9-valent) | 6, 11, 16, 18, 31, 33, 45, 52, 58 | Yes — the only one distributed |
What to expect — and a common misunderstanding
The vaccine is prevention, not treatment. Gardasil 9 protects against future infection, but it won't clear an HPV infection or warts you already have. Timing matters: it works best given before any sexual exposure, which is why pediatric guidance starts it in the preteen years, when the immune response is strongest and exposure hasn't happened yet.
It's a routine shot at the doctor's office, similar in feel to other vaccines, with the usual short-lived sore arm. If you're weighing the risk-benefit conversation, here's a plain-language rundown of the hpv vaccine side effects and the long-running safety data behind it. Many parents also want to know whether they have a choice in the matter; see hpv vaccine - mandatory or not? for how school requirements actually work.
Putting it together
For a boy or young man, the prevention plan is short: get the vaccine on schedule, and use condoms knowing they only partially block HPV. There's no routine screening test waiting to catch it later. Vaccination is the part you control, the part with hard numbers behind it, and it covers cancers, throat and anal, that men actually face.
Keep the two problems separate in your head: warts (annoying, treatable, not cancer) versus high-risk infection (usually silent, usually clears, but the source of HPV cancers). The vaccine targets both.
When to see a clinician
See a clinician to start or finish the vaccine series, no symptoms needed. Also go if you notice growths or bumps in the genital, anal, or oral area, since warts are diagnosed by exam, not lab test. Anyone with HIV or other anal-cancer risk factors should ask specifically about anal screening. And if a sore throat, hoarseness, a neck lump, or trouble swallowing doesn't resolve, get it checked, since those can be early signs of throat cancer.