HPV Infection in Women: Types, Symptoms, Testing and Prevention

Human papillomavirus (HPV) is the most common STI worldwide. In India, it is also the most significant preventable cause of cervical cancer, which is the second most common cancer in Indian women. Yet awareness of HPV among women in India remains low, and many women have the infection without knowing it.

Understanding HPV infection in women - what it is, how it spreads, what symptoms it does or does not cause, how it is detected, and crucially, how it can be prevented - is not just useful knowledge. It can protect your health and your life.

What is HPV?

HPV is a family of 200+ related viruses. They spread through skin contact, most commonly during sexual activity, including vaginal, anal, and oral sex, and genital contact without full penetration.

Most HPV infections clear on their own within 1-2 years, managed by the immune system without causing harm. The problem arises when certain high-risk types of HPV persist. These persistent infections are the ones that can cause cell changes in the cervix that, if not detected and treated, may eventually lead to cervical cancer.

HPV types are broadly categorised as:

High-risk types - HPV 16 and 18, which together account for about 70% of cervical cancer cases. Other high-risk types account for a further proportion.

Low-risk types - HPV 6 and 11, which cause genital warts but are not associated with cancer.

HPV Symptoms in Women

This is where HPV is most misunderstood. HPV symptoms in women are, in most cases, none at all.

Most HPV infections cause no symptoms: no pain, no discharge, no visible change. The virus can be present for months or years, silently causing cellular changes in the cervix without the woman noticing anything.

This is the fundamental reason why cervical screening with the Pap smear and HPV test is very important. By the time symptoms like abnormal bleeding, post-coital bleeding, an unusual discharge, or pelvic pain appear, cervical cancer may already be at an advanced stage.

The only HPV-related symptom that does show up visibly is from low-risk types: genital warts. These appear as flesh-coloured, flat or raised growths on the vulva, vagina, cervix, or around the anus. They are caused by HPV types 6 and 11 - the same types that the quadrivalent and 9-valent vaccines protect against. Genital warts are not cancer and do not become cancer, but they can be uncomfortable and need treatment.

How HPV Spreads and Who is at Risk

HPV spreads through intimate skin contact - it does not require penetrative sex. Condoms reduce the risk but do not eliminate it, because HPV can be present on skin not covered by a condom.

Almost all individuals who are sexually active can be exposed to HPV at some point. This is not a reflection of promiscuity; it is the nature of a virus that is this common. Most infections are cleared naturally. The minority that persists is what creates risk.

Factors that increase the risk of persistent high-risk HPV and progression to cervical precancer:

• Having multiple sexual partners
• Smoking, which impairs the local immune response in the cervix
• Weakened immune system - HIV, immunosuppressive medication
• Long-term use of oral contraceptives is associated with a slightly higher risk of cervical cancer in HPV-positive women, though the mechanism is not fully clear.
• Early onset of sexual activity

HPV Testing in Women

HPV testing in women is now the cornerstone of cervical cancer prevention. There are two main screening tools:

Pap Smear (Cervical Cytology)

The Pap smear collects cells from the cervix, which are then examined under a microscope for abnormal changes. It can detect early pre-cancerous cell changes (dysplasia) before they progress to cancer.

HPV Test

The HPV test checks directly for the presence of high-risk HPV DNA in cervical cells. It is more sensitive than the Pap smear at detecting high-risk infection and can identify women at risk before abnormal cells develop.

When Should Screening Begin?

The standard recommendation in India is:

• Begin Pap smear screening at age 21 or within 3 years of first becoming sexually active
• Repeat every 3 years for women aged 21 to 29 with normal results
• From age 30, HPV testing every 5 years is the preferred approach
• Women with certain high-risk factors like HIV-positive or immunocompromised, may need more frequent screening

Screening is recommended even for women who have had the HPV vaccine, the vaccine may not protect against all types of HPV, and women who were already exposed before vaccination are not protected against those strains.

What Happens if HPV is Detected?

A positive HPV test or an abnormal Pap smear result does not mean cervical cancer. It means further evaluation is needed.

Colposcopy is usually the next step. The gynaecologist applies a solution to the cervix that highlights abnormal areas, and a biopsy is taken if warranted.

Based on the biopsy findings:

• Low-grade changes (CIN 1) are usually monitored, as most resolve on their own
• High-grade changes (CIN 2 and CIN 3) are treated to remove the abnormal tissue before it can progress. Treatment options include LEEP (loop electrosurgical excision procedure) or cryotherapy

HPV Prevention in Women

HPV prevention in women can be achieved through two evidence-backed approaches: vaccination and regular screening.

HPV Vaccination

Vaccination is the most powerful preventive tool available. The vaccines available in India include:

• Cervarix (bivalent) - protects against HPV 16 and 18
• Gardasil 4 (quadrivalent) - protects against HPV 6, 11, 16, and 18 (covers cancer-causing types and genital wart types)
• Gardasil 9 (9-valent) - protects against 9 HPV types, covering approximately 90% of cervical cancers

The vaccine works best when given before any HPV exposure, which means before sexual activity begins. The IAP recommends vaccination from age 9, with a two-dose schedule for girls aged 9 to 14 (given six months apart) and a three-dose schedule for those 15 and older.

Adults up to age 45 can benefit from vaccination and should discuss it with their gynaecologist. The vaccine does not treat existing infection but protects against the types not yet encountered.

Book an online appointment with Dr. Surbhi Gupta for Pregnancy & Gynecology related issues.

Condom Use

Condoms reduce HPV transmission. They are an important protective measure alongside vaccination and screening, not a substitute for either.

Screening

Regular Pap smears and HPV testing remain essential even in vaccinated women. Screening detects cell changes early, when treatment is straightforward and effective.

Conclusion

HPV infection in women is extremely common, usually silent, and in most cases cleared naturally by the immune system. But the minority of persistent infections that drive cervical cancer make prevention and early detection genuinely life-saving. Vaccination for young girls and women, regular screening from the appropriate age, and awareness of what HPV is and is not are the tools that protect women in India and everywhere.

‍

‍