Medical Information Only. Consult your healthcare provider before considering clinical trial enrollment.
Clostridium Difficile Associated Disease: early-phase trial registry
A small indexed set (3 trials) with no open enrollment listed right now.
Corpus placement: #5,209 of 28,707 conditions by registered trial count.
3 US clinical trials · none currently recruiting · #5,209 of 28,707 conditions by registered trial count
Clostridium Difficile Associated Disease: 3 US clinical trials tracked, none currently recruiting.
Clostridium Difficile Associated Disease is the subject of 3 registered US clinical trials on ClinicalTrials.gov, none currently recruiting. 1 are in Phase 3-4 (later-stage) and 2 in Phase 1-2 (earlier-stage). The most active sponsor is Pfizer, running 3 of these trials.
Enrollment posture brief
Registry condition clostridium-difficile-associated-disease
OPEN 0 | RECR 0% | LATE 1 | EARLY 2 | RANK #5209 | SPON 3
Volume-matched condition peers
Nearest open-share peer: Accelerated Phase Chronic Myelogenous Leukemia (0% recruiting · 12 trials)
Clostridium Difficile Associated Disease has no open enrollment in this registry pull (3 archived studies). Peers show how other volume-matched labels compare on open share. How peer matching works →
Key findings
What ClinicalTrials.gov does not surface for Clostridium Difficile Associated Disease on its own pages , computed from the registry mirror as of 2026-08-08. Each line carries its own denominator so it can be quoted as it stands.
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Clostridium Difficile Associated Disease is recruiting below its size-band peers.
0 of 3 indexed trials (0%) are open to enrollment, against a 46.5% average across 27,806 conditions with fewer than 20 trials. The peer set uses the same ClinicalTrials.gov-derived counts as this page.
Indexed trials (enrollment closed)
3 total, page 1 of 1
Evaluation Of Clostridium Difficile Vaccine Lot Consistency In Healthy Adults 65 To 85 Years Of Age
Pfizer
NCT03579459
Evaluation of a 3-dose Vaccination Regimen With One of Three Ascending Dose Levels of Clostridium Difficile Vaccine With or Without Adjuvant in Healthy Adults Aged 50 to 85 Years
Pfizer
NCT01706367
A Study To Investigate A Clostridium Difficile Vaccine In Healthy Adults Aged 50 to 85 Years, Who Will Each Receive 3 Doses Of Vaccine.
Pfizer
NCT02117570
Phase Distribution
| Phase | Trial count |
|---|---|
| Phase 1 | 1 |
| Phase 2 | 1 |
| Phase 3 | 1 |
Top Sponsors
Named interventions
Most-linked intervention names on Clostridium Difficile Associated Disease records (sponsor-reported on ClinicalTrials.gov). Counts are trial links, not unique products.
US sites by state
Facility locations filed on Clostridium Difficile Associated Disease trials. A trial with sites in several states counts in each.
Source: ClinicalTrials.gov, National Library of Medicine. Data is informational only.
Related
What to do with this Clostridium Difficile Associated Disease page
3 registered trials, 0 currently recruiting, is a starting point for a conversation, not a diagnosis or a recommendation.
- No Clostridium Difficile Associated Disease trials are currently recruiting in this registry; that can change as new trials post, or check the broader research index. Browse research indexes
- Pfizer sponsors the most Clostridium Difficile Associated Disease trials on record, review their full trial history before evaluating a specific study. See Pfizer's trials
- Bring the specific trial ID (NCT number) to your own doctor before enrolling, this page is a directory, not medical guidance. Read the trial-finding guide
Trial and recruiting counts reflect ClinicalTrials.gov registry status as of the data vintage above; individual trial eligibility and enrollment status can change.
Every figure on PlainTrial is rendered directly from the ClinicalTrials.gov registry, no number is typed in by an editor. This Clostridium Difficile Associated Disease condition card totals 3 registered trials; most-linked intervention Clostridium difficile vaccine; top US site state North Carolina. See our editorial standards & corrections policy, the methodology behind these numbers, the data changelog, or report a data error.