# A Study to Learn About the Safety of an Expanded Pneumococcal Vaccine in Healthy Infants

> **NCT07573462** · PHASE3 · NOT_YET_RECRUITING · sponsor: **Pfizer** · enrollment: 2400 (estimated)

## Conditions studied

- Pneumococcal Disease

## Interventions

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

## Key facts

- **NCT ID:** NCT07573462
- **Lead sponsor:** Pfizer
- **Sponsor class:** INDUSTRY
- **Phase:** PHASE3
- **Study type:** INTERVENTIONAL
- **Status:** NOT_YET_RECRUITING
- **Start date:** 2026-05-21
- **Primary completion:** 2029-01-28
- **Final completion:** 2029-01-28
- **Target enrollment:** 2400 (ESTIMATED)
- **Last updated:** 2026-05-07


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT07573462

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT07573462, "A Study to Learn About the Safety of an Expanded Pneumococcal Vaccine in Healthy Infants". Retrieved via AI Analytics 2026-09-02 from https://api.ai-analytics.org/clinical/NCT07573462. Licensed CC0.

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