A Study To Investigate A Clostridium Difficile Vaccine In Healthy Adults Aged 50 to 85 Years, Who Will Each Receive 3 Doses Of Vaccine.
Public ClinicalTrials.gov record NCT02117570. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Official title
A Phase 2, Placebo-controlled, Randomised, Observer-blinded Trial To Evaluate The Safety, Tolerability And Immunogenicity Of A Clostridium Difficile Vaccine Administered As A 3-dose Regimen In Healthy Adults Aged 50 To 85 Years
Study identification
- NCT ID
- NCT02117570
- Recruitment status
- Completed
- Study type
- Interventional
- Phase
- Phase 2
- Lead sponsor
- Pfizer
- Industry
- Enrollment
- 185 participants
Conditions and interventions
Conditions
Interventions
- Clostridium difficile vaccine Biological
- Placebo Biological
Biological
Eligibility (public fields only)
- Age range
- 50 Years to 85 Years
- Sex
- All
- Healthy volunteers
- Accepts healthy volunteers
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Jun 30, 2014
- Primary completion
- Nov 30, 2015
- Completion
- Nov 30, 2015
- Last update posted
- Jan 29, 2017
2014 – 2015
United States locations
- U.S. sites
- 12
- U.S. states
- 6
- U.S. cities
- 12
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| Avail Clinical Research, LLC | DeLand | Florida | 32720 | — |
| Meridian Clinical Research | Savannah | Georgia | 31406 | — |
| Clinical Research Atlanta | Stockbridge | Georgia | 30281 | — |
| Meridian Clinical Research | Norfolk | Nebraska | 68701 | — |
| Meridian Clinical Research, LLC | Omaha | Nebraska | 68134 | — |
| Clinical Research Center of Nevada, LLC | Las Vegas | Nevada | 89104 | — |
| PMG Research of Charlotte | Charlotte | North Carolina | 28209 | — |
| PMG Research of Wilmington, LLC | Wilmington | North Carolina | 28401 | — |
| PMG Research of Winston-Salem | Winston-Salem | North Carolina | 27103 | — |
| Benchmark Research | Austin | Texas | 78705 | — |
| Benchmark Research | San Angelo | Texas | 76904 | — |
| Clinical Trials of Texas, Inc. | San Antonio | Texas | 78229 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT02117570, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted Jan 29, 2017 · Synced Jul 22, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT02117570 live on ClinicalTrials.gov.