# A Study to Learn About How a New Pneumococcal Vaccine Works in Infants.

> **NCT07629440** · PHASE3 · RECRUITING · sponsor: **Pfizer** · enrollment: 3230 (estimated)

## Conditions studied

- Pneumococcal Disease

## Interventions

- **BIOLOGICAL:** PG4
- **BIOLOGICAL:** 20-valent pneumococcal conjugate vaccine (20vPnC)

## Key facts

- **NCT ID:** NCT07629440
- **Lead sponsor:** Pfizer
- **Sponsor class:** INDUSTRY
- **Phase:** PHASE3
- **Study type:** INTERVENTIONAL
- **Status:** RECRUITING
- **Start date:** 2026-05-29
- **Primary completion:** 2029-06-05
- **Final completion:** 2029-06-05
- **Target enrollment:** 3230 (ESTIMATED)
- **Last updated:** 2026-09-08


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT07629440

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT07629440, "A Study to Learn About How a New Pneumococcal Vaccine Works in Infants.". Retrieved via MORVS 2026-10-20 from https://api.morvs.ai/clinical/NCT07629440. Licensed CC0.

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*[Clinical trials dataset](/datasets/clinical-trials) · CC0 1.0*