# A Trial To Evaluate A Multivalent Pneumococcal Conjugate Vaccine In Healthy Adults 50-85 Years Of Age

> **NCT03313050** · PHASE2 · COMPLETED · sponsor: **Pfizer** · enrollment: 511 (actual)

## Conditions studied

- Pneumococcal Infections

## Interventions

- **BIOLOGICAL:** Multivalent
- **BIOLOGICAL:** Tdap
- **BIOLOGICAL:** polysaccharide

## Key facts

- **NCT ID:** NCT03313050
- **Lead sponsor:** Pfizer
- **Sponsor class:** INDUSTRY
- **Phase:** PHASE2
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2017-10-12
- **Primary completion:** 2019-05-24
- **Final completion:** 2019-05-24
- **Target enrollment:** 511 (ACTUAL)
- **Last updated:** 2020-06-04


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT03313050

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT03313050, "A Trial To Evaluate A Multivalent Pneumococcal Conjugate Vaccine In Healthy Adults 50-85 Years Of Age". Retrieved via AI Analytics 2026-05-24 from https://api.ai-analytics.org/clinical/NCT03313050. Licensed CC0.

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