Independent directory Public ClinicalTrials.gov records United States
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ClinicalTrials.gov public records Last synced Sep 24, 2026, 2:35 AM EDT

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Showing 1–3 of 3 matching trials from the live ClinicalTrials.gov search.
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Conditions
Clostridium Difficile
Interventions
C. difficile vaccine with adjuvant, placebo
Biological
Lead sponsor
Pfizer
Industry
Eligibility
50 Years to 85 Years
Enrollment
184 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2015
U.S. locations
6
States / cities
Overland Park, Kansas • Cary, North Carolina • Raleigh, North Carolina + 2 more
Conditions
Clostridium Difficile Infection, Diarrhea
Interventions
Clostridium difficile toxoids A and B (Low-dose with adjuvant), Clostridium difficile toxoids A and B (Low-dose without adjuvant), Clostridium difficile toxoids A and B (high-dose with adjuvant), Clostridium difficile toxoids A and B (high-dose without adjuvant), Placebo: 0.9% normal saline
Biological
Lead sponsor
Sanofi Pasteur, a Sanofi Company
Industry
Eligibility
40 Years to 75 Years
Enrollment
650 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2013
U.S. locations
30
States / cities
Redding, California • Bristol, Connecticut • Stamford, Connecticut + 25 more
Conditions
Clostridium Difficile Associated Disease
Interventions
C. difficile vaccine, C. difficile vaccine +adjuvant
Biological
Lead sponsor
Pfizer
Industry
Eligibility
50 Years to 85 Years
Enrollment
192 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2014
U.S. locations
4
States / cities
Pembroke Pines, Florida • South Miami, Florida • Overland Park, Kansas + 1 more