A Study To Investigate Two 3-dose Schedules Of A Clostridium Difficile Vaccine In Healthy Adults Aged 65 to 85 Years
Public ClinicalTrials.gov record NCT02561195. 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, RANDOMIZED, OBSERVER-BLINDED STUDY TO EVALUATE THE SAFETY, TOLERABILITY, AND IMMUNOGENICITY OF TWO 3-DOSE REGIMENS OF A CLOSTRIDIUM DIFFICILE VACCINE IN HEALTHY ADULTS AGED 65 TO 85 YEARS
Study identification
- NCT ID
- NCT02561195
- Recruitment status
- Completed
- Study type
- Interventional
- Phase
- Phase 2
- Lead sponsor
- Pfizer
- Industry
- Enrollment
- 300 participants
Conditions and interventions
Conditions
Interventions
- Clostridium difficile Vaccine Biological
- Placebo Biological
Biological
Eligibility (public fields only)
- Age range
- 65 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
- Jul 15, 2015
- Primary completion
- Mar 6, 2017
- Completion
- Feb 12, 2020
- Last update posted
- Mar 7, 2021
2015 – 2020
United States locations
- U.S. sites
- 17
- U.S. states
- 9
- U.S. cities
- 14
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| Avail Clinical Research, LLC | DeLand | Florida | 32720 | — |
| QPS-MRA, LLC (Broward Research Group) | Hollywood | Florida | 33024 | — |
| QPS-MRA, LLC (Miami Research Associates) | South Miami | Florida | 33143 | — |
| East-West Medical Research Institute | Honolulu | Hawaii | 96814 | — |
| Vince & Associates Clinical Research, Inc. | Overland Park | Kansas | 66212 | — |
| Vince & Associates Clinical Research, Inc | Overland Park | Kansas | 66212 | — |
| Meridian Clinical Research, LLC | Omaha | Nebraska | 68134 | — |
| Clinical Research Center of Nevada LLC | Las Vegas | Nevada | 89104 | — |
| Wake Research Associates, LLC | Raleigh | North Carolina | 27612 | — |
| PMG Research of Wilmington, LLC | Wilmington | North Carolina | 28401 | — |
| Cincinnati Childrens Hospital Medical Center | Cincinnati | Ohio | 45206 | — |
| Cincinnati Childrens Hospital Medical Center | Cincinnati | Ohio | 45229 | — |
| Benchmark Research | Austin | Texas | 78705 | — |
| Texas Center For Drug Development, Inc. | Houston | Texas | 77081 | — |
| Clinical Trials of Texas, Inc. | San Antonio | Texas | 78229 | — |
| J. Lewis Research, Inc. / Foothill Family Clinic | Salt Lake City | Utah | 84109 | — |
| J. Lewis Research, Inc. / Foothill Family Clinic South | Salt Lake City | Utah | 84121 | — |
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 NCT02561195, 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 Mar 7, 2021 · Synced May 18, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT02561195 live on ClinicalTrials.gov.