HPV and Cervical Cancer — A Dangerous Connection
HPV (Human Papillomavirus) is a group of human papilloma viruses, with over 200 identified types. It is the most common sexually transmitted virus group in the world. Most sexually active adults will be infected with HPV at least once in their lifetime.
HPV is divided into two main groups:
- Low-risk HPV (types 6, 11): Causes genital warts (condyloma), not cancerous but causes discomfort and psychological distress.
- High-risk HPV (types 16, 18, 31, 33, 45, 52, 58): Can cause cellular changes leading to cancer. Notably, types 16 and 18 cause 70% of all cervical cancers worldwide.
The progression from HPV infection to cancer
It is crucial to understand that HPV infection does not mean cancer. The progression typically goes through several stages:
- HPV infection → 80% of women are infected at least once in their lifetime
- Natural clearance → In 90% of cases, the immune system eliminates the virus within 1-2 years
- Persistent infection → In 10% of cases, the virus persists
- Precancerous lesions (CIN) → Abnormal cell changes (detectable by Pap smear)
- Invasive cancer → After 10-20 years if not detected and treated
Good news: Because this process takes many years, we have a wide window for prevention (vaccination) and early detection (regular screening).
The situation in Vietnam
- 4,100 cases of cervical cancer newly diagnosed each year
- 2,400 deaths — nearly 7 Vietnamese women die from cervical cancer every day
- Cervical cancer ranks 3rd among the most common cancers in Vietnamese women
- 80% of women are infected with HPV at least once in their lifetime
- HPV vaccination rates in Vietnam remain very low compared to developed countries
BSCKI. Trần Thị Thúy Lâm, with over 30 years of OB-GYN experience, emphasizes: “Cervical cancer is one of the few cancers that can be almost completely prevented through HPV vaccination and regular screening. Every case of cervical cancer that occurs is a case that could have been prevented.”
HPV Causes More Than Just Cervical Cancer
Besides cervical cancer, HPV is also linked to many other conditions:
- Vulvar and vaginal cancer — 40-50% of cases linked to HPV
- Anal cancer — 90% of cases linked to HPV (both men and women)
- Oropharyngeal cancer — Increasing, especially in men
- Penile cancer — 50% of cases linked to HPV
- Genital warts (condyloma) — Caused by HPV types 6, 11; uncomfortable and prone to recurrence
- Respiratory papillomatosis — Rare but serious, can cause breathing difficulty in children
Available HPV Vaccines
| Vaccine | HPV Types | Doses | Protection | Notes |
|---|---|---|---|---|
| Gardasil 4 | 6, 11, 16, 18 | 2-3 | Cervical cancer + warts | Production discontinued in many countries |
| Gardasil 9 | 6, 11, 16, 18, 31, 33, 45, 52, 58 | 2-3 | Broadest protection — 90% cervical cancer | Top recommendation |
| Cervarix | 16, 18 | 2-3 | Cervical cancer | Partial cross-protection against types 31, 33, 45 |
Gardasil 9 is currently the most widely recommended vaccine because it protects against 9 HPV types, preventing up to 90% of cervical cancers and 90% of genital warts.
How the HPV vaccine works
The HPV vaccine contains recombinant viral coat proteins (VLP — Virus-Like Particles) and does not contain viral DNA, so it cannot cause HPV infection. When injected, the vaccine stimulates the immune system to produce specific antibodies. Upon future exposure to actual HPV, these antibodies neutralize the virus before it can enter cells.
Who Should Get the HPV Vaccine?
Strongly recommended (high priority)
- Females 9-14 years old — Highest effectiveness since they haven’t been exposed to HPV, only 2 doses needed (cost savings)
- Females 15-26 years old — 3 doses, still very effective even if already sexually active
- Males 9-26 years old — Prevents genital warts, anal cancer, oropharyngeal cancer. Vaccinating males also reduces HPV transmission to female partners.
May be vaccinated (based on doctor’s advice)
- Females 27-45 years old — Lower effectiveness but still beneficial, especially if:
- Not previously infected with HPV types covered by the vaccine
- Recently have a new partner
- Want additional protection
- Decision based on doctor’s counsel and cost-effectiveness considerations
Do not vaccinate when
- Currently pregnant — Postpone until after delivery. If pregnancy is discovered mid-schedule, postpone remaining doses until after delivery; no need to restart the series.
- Severe allergy to vaccine components (especially yeast protein)
- High fever or acute illness — Postpone until recovered
- History of severe allergic reaction (anaphylaxis) to a previous dose
Detailed Vaccination Schedule
| Age Group | Doses | Schedule | Notes |
|---|---|---|---|
| 9-14 years | 2 doses | Dose 1 → Dose 2 after 6-12 months | Economical, equivalent efficacy to 3 doses |
| 15-45 years | 3 doses | Dose 1 → Dose 2 after 2 months → Dose 3 after 6 months | 0-2-6 month schedule |
Important scheduling notes:
- Minimum interval between doses 1 and 2: 4 weeks
- Minimum interval between doses 2 and 3: 12 weeks
- If doses are delayed, no need to restart — just continue with the remaining doses
- Complete all 3 doses within 1 year for optimal protection
Is the HPV Vaccine Safe?
Yes. This is one of the most thoroughly studied vaccines in medical history. WHO and global health agencies (CDC, EMA, FDA) confirm:
- Over 500 million doses administered worldwide since approval in 2006
- Continuous monitoring through the Global Advisory Committee on Vaccine Safety (GACVS)
- Side effects are usually mild and temporary
- Does not cause infertility — Multiple large-scale studies (hundreds of thousands of women) have completely debunked this myth
- Does not contain live virus — The vaccine contains recombinant coat proteins, cannot cause HPV infection
- Does not cause autism or autoimmune diseases — Large epidemiological studies found no association
Common side effects (mild, self-resolving)
- Pain and swelling at the injection site (80%) — Usually resolves within 1-2 days
- Mild headache (10-20%)
- Mild fever (5-10%) — Below 38.5°C
- Nausea, dizziness (rare) — Usually from anxiety about the injection
Rare side effects
- Severe allergic reaction (anaphylaxis): Extremely rare, approximately 1-2 cases per million doses
- Therefore, stay at the vaccination facility for 30 minutes after injection for observation
Addressing Common Concerns
“My daughter is only 11 — isn’t it too early for the HPV vaccine?”
No. In fact, this is the ideal time. Vaccinating early before HPV exposure provides the highest protective effect. Children 9-14 years old only need 2 doses (instead of 3), as the immune response at this age is stronger.
“I’ve already been sexually active — is the HPV vaccine still useful?”
Yes, you should still get vaccinated. Even if you have been infected with one HPV type, the vaccine still protects against other types you haven’t been exposed to. Research shows that vaccinating sexually active women still significantly reduces cervical cancer risk.
“After getting the HPV vaccine, do I still need gynecological exams?”
Yes, that’s a misconception. The vaccine protects against the most common HPV types but not all cancer-causing types. Vaccinated women still need cervical cancer screening with Pap smear and HPV test per recommended schedules.
“I’ve been diagnosed with HPV — will the vaccine help cure it?”
The HPV vaccine is a preventive measure, not a treatment. It does not help eliminate an existing HPV infection. However, vaccination can still protect you from other HPV types you haven’t been exposed to.
Vaccine + Screening = The Best Protection Strategy
HPV vaccine + regular Pap/HPV screening = near-complete cervical cancer prevention.
| Measure | Cervical Cancer Risk Reduction | Early Detection |
|---|---|---|
| Vaccine only | 70-90% reduction | No |
| Screening only | No risk reduction | Early detection → curable |
| Vaccine + screening | Near-complete elimination | Yes |
Recommended screening schedule
- Ages 21-29: Pap smear every 3 years
- Ages 30-65: Pap smear + HPV test every 5 years (or Pap every 3 years)
- Over 65: Stop screening if previous results were normal
When to See a Doctor
You should see an OB-GYN specialist when:
- You want advice on the appropriate HPV vaccine for yourself or your daughter
- You have never been screened for cervical cancer or it has been a long time since your last screening
- You have suspicious symptoms: abnormal discharge, post-coital bleeding, pelvic pain
- You have an abnormal Pap smear result
- You have been diagnosed with HPV and need monitoring
- You have a history of chronic cervicitis
HPV Vaccine Cost
HPV vaccine costs vary by vaccine type and facility:
| Vaccine | Cost / Dose | Total (3 doses) |
|---|---|---|
| Gardasil 4 | 800,000-1,200,000 VND | 2.4-3.6 million |
| Gardasil 9 | 1,500,000-2,500,000 VND | 4.5-7.5 million |
| Cervarix | 700,000-1,000,000 VND | 2.1-3.0 million |
Comparison: Cervical cancer treatment can cost 200-500 million VND or more, not including the pain and impact on quality of life. HPV vaccination is a very worthwhile investment in health.
HPV Vaccine Consultation at Phòng Khám Bác Sỹ Lâm
Phòng Khám Sản Phụ Khoa Bác Sỹ Lâm offers comprehensive cervical cancer screening services and HPV vaccine counseling:
- Free consultation on the appropriate vaccine type based on age and health status
- Colposcopy with specialized magnifying equipment
- Pap smear + HPV test — in coordination with Medlatec Hospital Hanoi for accurate results
- Monitoring and management of abnormal Pap cases and HPV infections
- Coordination with the National Cancer Hospital when suspicious lesions are found
BSCKI. Trần Thị Thúy Lâm is a member of the Vietnam Sexual Health Association, formerly an OB-GYN physician at the Provincial General Hospital of Lào Cai, with over 30 years of experience in gynecological examination and treatment.
Don’t wait — protect your health and your daughter’s health today. HPV vaccination and regular screening are the best ways to prevent cervical cancer.
Call now: 0986 321 000 | Address: 125 Hàm Nghi, Kim Tân, Lào Cai
The clinic is open Monday through Saturday, mornings 7:30-11:30, afternoons 1:30-5:00 PM. Appointments can be made by phone and Zalo.
