# Immunogenicity and Safety of Sequential 2vHPV-9vHPV Vaccination in Girls Aged 9-14 Years

> **NCT07281677** · PHASE4 · RECRUITING · sponsor: **Zhejiang Provincial Center for Disease Control and Prevention** · enrollment: 400 (estimated)

## Conditions studied

- HPV Infection

## Interventions

- **BIOLOGICAL:** bivalent HPV vaccine
- **BIOLOGICAL:** 9-valent HPV vaccine

## Key facts

- **NCT ID:** NCT07281677
- **Lead sponsor:** Zhejiang Provincial Center for Disease Control and Prevention
- **Sponsor class:** OTHER_GOV
- **Phase:** PHASE4
- **Study type:** INTERVENTIONAL
- **Status:** RECRUITING
- **Start date:** 2025-12-20
- **Primary completion:** 2028-12-20
- **Final completion:** 2029-11-13
- **Target enrollment:** 400 (ESTIMATED)
- **Last updated:** 2025-12-15


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT07281677

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT07281677, "Immunogenicity and Safety of Sequential 2vHPV-9vHPV Vaccination in Girls Aged 9-14 Years". Retrieved via AI Analytics 2026-06-08 from https://api.ai-analytics.org/clinical/NCT07281677. Licensed CC0.

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