# Immunogenicity After Revaccination With 23-valent Pneumococcal Polysaccharide Vaccine: Healthy Elderly People Versus Diabetic Patients

> **NCT04875858** · PHASE4 · UNKNOWN · sponsor: **Korea University Guro Hospital** · enrollment: 254 (estimated)

## Conditions studied

- Pneumococcal Infections

## Interventions

- **DRUG:** ProDiax-23 (PPSV23)

## Key facts

- **NCT ID:** NCT04875858
- **Lead sponsor:** Korea University Guro Hospital
- **Sponsor class:** OTHER
- **Phase:** PHASE4
- **Study type:** INTERVENTIONAL
- **Status:** UNKNOWN
- **Start date:** 2021-05-01
- **Primary completion:** 2022-04-30
- **Final completion:** 2022-04-30
- **Target enrollment:** 254 (ESTIMATED)
- **Last updated:** 2021-05-06

## Collaborators

- [object Object]

## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04875858

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04875858, "Immunogenicity After Revaccination With 23-valent Pneumococcal Polysaccharide Vaccine: Healthy Elderly People Versus Diabetic Patients". Retrieved via AI Analytics 2026-05-28 from https://api.ai-analytics.org/clinical/NCT04875858. Licensed CC0.

---

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