High-risk HPV causes cancer well beyond the cervix — it drives nearly all cervical cancer, most anal cancer, and most throat cancer, while low-risk types cause warts. The Gardasil 9 vaccine given at the recommended ages can prevent more than 90% of HPV-caused cancers, and cervical screening catches precancer early. Both still matter.
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 |
The essentials: what HPV actually does
HPV is the most common STI, and most people who are sexually active will be exposed at some point CDC. It's not one virus but a family of types, and the distinction between them is the single most important thing to understand. Low-risk types — chiefly 6 and 11 — cause genital warts but never cancer. High-risk types — 16, 18, and a handful of others — cause cancer but rarely any visible symptom along the way. People often blur these into one fear, but they're two separate problems.
Here's the reassuring part most coverage buries: in most cases — about 9 out of 10 — HPV clears on its own within two years, with no health problems and no treatment. Your immune system handles it quietly. Cancer happens in the smaller fraction of high-risk infections that persist for years, slowly changing cells before anything goes wrong.
And the cancer toll reaches well past the cervix. High-risk HPV causes virtually all cervical cancer, over 90% of anal cancers, and about 70% of throat (oropharyngeal) cancers NCI. It also causes vulvar, vaginal, and penile cancers. Notably, oropharyngeal cancer — cancer in the back of the throat and base of the tongue — has now overtaken cervical cancer as the most common HPV-related cancer in the US.
Symptoms: why high-risk HPV is so silent
Most HPV infections are asymptomatic and cause no clinical disease at all. That's exactly why high-risk HPV is dangerous — there's no lump, no itch, no discharge to warn you that cell changes are happening. The infection can persist for years before it ever shows up, and by then it's usually a precancer found on screening, not a symptom you'd notice yourself.
Genital warts are the visible exception, and they come from the low-risk types. They usually appear as a small bump or group of bumps in the genital area — sometimes flat, sometimes cauliflower-shaped, often painless. Warts are a cosmetic and comfort problem, not a cancer one: the types that cause warts do not cause cancer. Seeing a wart doesn't mean you're at higher cancer risk, and not seeing one tells you nothing about whether you carry a high-risk type.
Testing: how HPV is actually found
There's no single 'HPV test' you can add to a general STD panel. HPV is found through cervical screening, not a swab on a routine checkup. Current guidance starts cervical screening at age 25 with a primary HPV test every 5 years (preferred) rather than a yearly Pap ACS. The longer interval isn't carelessness — it reflects the biology. Because most HPV clears within two years, frequent testing mostly catches infections that would have resolved anyway, while the HPV test catches more real precancer with fewer visits.
For everyone else, the rules are deliberately narrow. HPV tests are not recommended to screen men, adolescents, or women under age 30. There's no validated routine HPV test for men, which is why a worried male partner can't simply 'get tested for HPV.' And HPV testing is not used to diagnose warts — the result wouldn't confirm anything or change how a wart is treated.
Anal screening sits in a gray zone. CDC's 2021 guidance found the data insufficient to recommend routine anal cytology, even for men who have sex with men or people with HIV. That position predates the 2022 ANCHOR trial, which 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 people where high-resolution anoscopy is available — but it isn't a blanket CDC recommendation. If you're in a higher-risk group, ask a clinician what applies to you. To time any STI screening correctly, see when to test after exposure, and you can get tested when you're due.
Treatment: warts, precancers, and the virus itself
Treatment splits along the same low-risk/high-risk line. Warts can be treated, but doing so doesn't cure the virus — there's no drug that clears HPV from your body. Your immune system does that on its own timeline, which is why warts can come back after treatment.
You can either apply a prescription cream at home over several weeks or have a clinic remove the warts in the office. None is clearly best; the choice depends on number, location, cost, and preference CDC STI Tx.
| Approach | Examples | What to expect |
|---|---|---|
| Patient-applied at home | Imiquimod cream; podofilox solution or gel; sinecatechins ointment | You apply it over weeks; sinecatechins is not recommended for immunocompromised or HIV-positive patients |
| Provider-administered | Cryotherapy (liquid nitrogen or cryoprobe); TCA or BCA solution; surgical removal (excision, curettage, laser, electrosurgery) | Done in clinic, sometimes repeated visits |
Cancer precursors are a different track entirely. A precancer found on cervical screening is managed by gynecology — usually monitored or removed with a minor procedure — and never with wart cream. The goal there is to stop high-grade cell changes before they ever become cancer. For how cervical cell changes are graded and followed, see cervical cancer and cervical dysplasia.
Prevention: the vaccine is your strongest tool
Three things lower your risk: vaccination, cervical screening, and condoms. Condoms give partial protection only, because HPV can infect skin a condom doesn't cover — they help but don't eliminate the risk.
The vaccine is where the hard numbers are. 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 ACS. The vaccine used in the US today is Gardasil 9, which protects against nine types: 6, 11, 16, 18, 31, 33, 45, 52, and 58 CDC Pink Book. Types 16 and 18 alone cause about 66% of cervical cancers; the five added high-risk types cover roughly another 15%, and types 6 and 11 cause more than 90% of genital warts.
This matters because the older shots covered less. The earlier quadrivalent Gardasil covered four types and the bivalent Cervarix covered two; since 2016, only Gardasil 9 has been distributed in the US, so it guards against more cancer-causing types than the shots people got years ago.
One critical caveat: the vaccine is prevention, not treatment. Gardasil 9 protects against future infection — it won't clear an infection or warts you already have, and vaccinated people still need cervical screening. It's safe across large studies; if you're weighing it, read is the gardasil hpv vaccine safe? and, for sons, what you should know about the hpv vaccine for boys — boys benefit because HPV causes throat, anal, and penile cancers too.
When to see a clinician
- You have a new bump or group of bumps in the genital or anal area that you want evaluated or treated.
- You're due for cervical screening — at age 25 or per your last result's recommended interval.
- You have unusual vaginal bleeding, especially after sex or between periods, which warrants prompt evaluation.
- You have a persistent sore throat, hoarseness, or a neck lump that doesn't resolve.
- You're in a higher-risk group (for example, living with HIV) and want to discuss whether anal screening applies to you.
- You or your child haven't been vaccinated and want to know if it's still worth getting.