Monitoring the effectiveness of HPV vaccination in preventing cervical HPV infection in Sikkim, India

Assessing the Population Level Impact of HPV Vaccination on Prevention of Cervical HPV Infection in Sikkim, India

Observational International Agency for Research on Cancer · NCT04588402

This study is testing how well the HPV vaccine works in preventing cervical HPV infections in women aged 18 to 22 in Sikkim, India, by comparing samples taken now and seven years later.

Quick facts

Study typeObservational
Enrollment5500 (estimated)
Ages18 Years to 22 Years
SexFemale
SponsorInternational Agency for Research on Cancer Academic / other
Locations1 site (Gangtok, Sikkim)
Trial IDNCT04588402 on ClinicalTrials.gov

What this trial studies

This project aims to assess the effectiveness of HPV vaccination in real-world conditions, focusing on women aged 18 to 22 years in Sikkim, India. The study will collect cervical samples from participants at baseline and again seven years after the initiation of the HPV vaccination program. By comparing the prevalence of HPV infections over time, the study seeks to provide valuable feedback to public health authorities regarding the impact of the vaccination program. The observational nature of the study means that no interventions will be administered; instead, data will be gathered through sample collection and surveys.

Who should consider this trial

Good fit: Ideal candidates for this study are married women aged 18 to 22 years residing in Sikkim.

Not a fit: Patients who have undergone a hysterectomy or those who are vaccinated as part of a research project may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could provide critical insights into the effectiveness of HPV vaccination, potentially leading to improved cervical cancer prevention strategies.

How similar studies have performed: Other studies have shown success in monitoring HPV vaccination impact, but this specific observational approach in Sikkim is relatively novel.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Women aged 18 to 22 years, resident of Sikkim and married.
* Pregnancy will not be considered as exclusion criteria.
* Sample collection should be avoided during active menstruation.

Exclusion Criteria:

* Women who do not provide written consent
* Women who are not able to cooperate in collection of cervical cell sample or respond to questions due to any acute or severe mental and physical illnesses.
* Women who had undergone hysterectomy.
* Vaccinated in research project

Where this trial is running

Gangtok, Sikkim

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Cervical Cancer
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.