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

> **NCT06524414** · PHASE2 · ACTIVE_NOT_RECRUITING · sponsor: **Pfizer** · enrollment: 605 (actual)

## Conditions studied

- Pneumococcal Disease

## Interventions

- **BIOLOGICAL:** PG4
- **BIOLOGICAL:** 20-valent pneumococcal conjugate vaccine (20vPnC)
- **BIOLOGICAL:** 15-valent pneumococcal conjugate vaccine (PCV15)

## Key facts

- **NCT ID:** NCT06524414
- **Lead sponsor:** Pfizer
- **Sponsor class:** INDUSTRY
- **Phase:** PHASE2
- **Study type:** INTERVENTIONAL
- **Status:** ACTIVE_NOT_RECRUITING
- **Start date:** 2024-07-25
- **Primary completion:** 2027-05-01
- **Final completion:** 2027-05-01
- **Target enrollment:** 605 (ACTUAL)
- **Last updated:** 2026-04-28


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT06524414

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT06524414, "A Study to Learn About How a New Pneumococcal Vaccine Works in Infants". Retrieved via AI Analytics 2026-06-25 from https://api.ai-analytics.org/clinical/NCT06524414. Licensed CC0.

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