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ClinicalTrials.gov public records Last synced Oct 20, 2026, 5:36 AM EDT

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Showing 1–24 of 114 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Infectious Diarrhea Clear all
Not listed Not applicable Interventional

A Study to Evaluate the Use of Nitazoxanide to Treat Cryptosporidiosis

NCT00002158
View directory record Official record
Conditions
Cryptosporidiosis, HIV Infections
Interventions
Nitazoxanide
Drug
Lead sponsor
Romark Laboratories L.C.
Industry
Eligibility
3 Years to 65 Years
Healthy volunteers
Healthy volunteers not accepted
U.S. locations
1
States / cities
Tampa, Florida
Source: ClinicalTrials.gov public record
Updated Jul 10, 2007 · Synced Oct 20, 2026, 5:36 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Clinical Study to Assess the Efficacy of Once-daily IMM-124E (Travelan®) in a Controlled Human Infection Model.

NCT05933525
View directory record Official record
Conditions
Diarrhea, Travelers Diarrhea, Infectious Diarrhea
Interventions
Travelan, Placebo
Biological · Other
Lead sponsor
Immuron Ltd.
Industry
Eligibility
18 Years to 50 Years
Enrollment
63 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jun 12, 2026 · Synced Oct 20, 2026, 5:36 AM EDT
Recruiting Phase 3 Interventional

VE303 for Prevention of Recurrent Clostridioides Difficile Infection

NCT06237452
View directory record Official record
Conditions
Clostridium Difficile, Clostridium Difficile Infections, Clostridium Difficile Infection Recurrence, Clostridioides Difficile Infection, Clostridioides Difficile Infection Recurrence, CDI, C. Diff Infection, Recurrent Clostridium Difficile Infection, C.Difficile Diarrhea, Diarrhea Infectious
Interventions
VE303, Placebo
Biological
Lead sponsor
Vedanta Biosciences, Inc.
Industry
Eligibility
12 Years and older
Enrollment
852 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2027
U.S. locations
84
States / cities
Huntsville, Alabama • Chandler, Arizona • Phoenix, Arizona + 73 more
Source: ClinicalTrials.gov public record
Updated Sep 29, 2026 · Synced Oct 20, 2026, 5:36 AM EDT
Completed Phase 2 Interventional

Probiotics for Clostridium Difficile Infection in Older Adults

NCT01680874
View directory record Official record
Conditions
Clostridium Difficile
Interventions
Probiotic, Placebo
Dietary Supplement
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years and older
Enrollment
33 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2015
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Dec 3, 2015 · Synced Oct 20, 2026, 5:36 AM EDT
Completed Phase 2 Interventional Results available

Study of CB-183,315 in Participants With Clostridium Difficile Infection

NCT01085591
View directory record Official record
Conditions
Clostridium Difficile Infection, Diarrhea
Interventions
CB-183,315, Placebo, Vancomycin
Drug
Lead sponsor
Cubist Pharmaceuticals LLC, a subsidiary of Merck & Co., Inc. (Rahway, New Jersey USA)
Industry
Eligibility
18 Years and older
Enrollment
210 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
22
States / cities
Washington D.C., District of Columbia • Saint Cloud, Florida • Decatur, Georgia + 17 more
Source: ClinicalTrials.gov public record
Updated Sep 11, 2018 · Synced Oct 20, 2026, 5:36 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Dose Escalating Study of Intramuscular Invaplex[AR-DETOX]

NCT03869333
View directory record Official record
Conditions
Diarrhea
Interventions
Invaplex[AR-DETOX], Placebo
Biological · Other
Lead sponsor
PATH
Other
Eligibility
18 Years to 50 Years
Enrollment
58 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
Silver Spring, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 29, 2021 · Synced Oct 20, 2026, 5:36 AM EDT
Terminated Phase 2 Interventional Results available

Alanyl-glutamine Supplementation of Standard Treatment for C. Difficile Infection

NCT02053350
View directory record Official record
Conditions
Clostridium Difficile Infection
Interventions
Alanyl-glutamine
Drug
Lead sponsor
University of Virginia
Other
Eligibility
18 Years and older
Enrollment
7 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2017
U.S. locations
1
States / cities
Charlottesville, Virginia
Source: ClinicalTrials.gov public record
Updated Jun 7, 2022 · Synced Oct 20, 2026, 5:36 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Shigella CVD 31000: Study of Responses With Shigella-ETEC Vaccine Strain CVD 1208S-122

NCT04634513
View directory record Official record
Conditions
Shigella Infection, Enterotoxigenic Escherichia Coli Infection
Interventions
strain CVD 1208S-122, Placebo
Biological · Other
Lead sponsor
University of Maryland, Baltimore
Other
Eligibility
18 Years to 49 Years
Enrollment
53 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2024
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Feb 2, 2026 · Synced Oct 20, 2026, 5:36 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Safety and Immunogenicity of Artificial Invaplex (Shigella Flexneri 2a InvaplexAR)

NCT02445963
View directory record Official record
Conditions
Shigellosis, Bacillary Dysentery
Interventions
Shigella flexneri 2a InvaplexAR
Biological
Lead sponsor
U.S. Army Medical Research and Development Command
Federal
Eligibility
18 Years to 45 Years
Enrollment
38 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2016
U.S. locations
1
States / cities
Silver Spring, Maryland
Source: ClinicalTrials.gov public record
Updated Feb 12, 2021 · Synced Oct 20, 2026, 5:36 AM EDT
Completed Not applicable Interventional

The Effectiveness of Cow's Milk Immune Globulin in the Treatment of AIDS-Related Diarrhea

NCT00002264
View directory record Official record
Conditions
Cryptosporidiosis, HIV Infections
Interventions
Cryptosporidium Immune Whey Protein Concentrate (Bovine)
Drug
Lead sponsor
Stolle Milk Biologic International
Industry
Eligibility
12 Years and older
Healthy volunteers
Healthy volunteers not accepted
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jun 24, 2005 · Synced Oct 20, 2026, 5:36 AM EDT
Completed Phase 2 Interventional Results available

The GRAFT Study: Gut RecolonizAtion by Fecal Transplantation

NCT03621657
View directory record Official record
Conditions
Clostridium Difficile Infection, C.Difficile Diarrhea, CDI
Interventions
Low Dose FMT Capsule DE, Single Dose FMT Capsule DE, Placebo oral capsule
Drug
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years and older
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2020
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Mar 15, 2021 · Synced Oct 20, 2026, 5:36 AM EDT
Completed Phase 2 Interventional

A Study of Nitazoxanide in Patients With AIDS and Diarrhea Caused by Cryptosporidium

NCT00001081
View directory record Official record
Conditions
Cryptosporidiosis, HIV Infections
Interventions
Nitazoxanide
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
13 Years and older
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Ends 1998
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Nov 1, 2021 · Synced Oct 20, 2026, 5:36 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Safety Study of Inactivated Shigella Whole Cell Vaccine in Adults

NCT01509846
View directory record Official record
Conditions
Shigellosis
Interventions
Vaccine: 2.6±0.8 x 10^8 vp/mL, 1 dose, Vaccine: 2.6±0.8 x 10^9 vp/mL, 3 doses, Vaccine: 2.6±0.8 x 10^10 vp/mL, 3 doses, Vaccine: 2.6±0.8 x 10^11 vp/mL, 3 doses, Placebo: 1-3 doses
Biological
Lead sponsor
PATH
Other
Eligibility
18 Years to 45 Years
Enrollment
82 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2012
U.S. locations
2
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Aug 11, 2021 · Synced Oct 20, 2026, 5:36 AM EDT
Completed Phase 2 Interventional Results available

Safety and Efficacy Study of VP20621 for Prevention of Recurrent Clostridium Difficile Infection

NCT01259726
View directory record Official record
Conditions
Clostridium Difficile Infection
Interventions
VP20621, Placebo
Biological · Other
Lead sponsor
Shire
Industry
Eligibility
18 Years and older
Enrollment
173 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2013
U.S. locations
42
States / cities
Modesto, California • Palm Desert, California • Sacramento, California + 39 more
Source: ClinicalTrials.gov public record
Updated Jun 10, 2021 · Synced Oct 20, 2026, 5:36 AM EDT
Completed Phase 2 Interventional

A Study of SMT19969 Compared With Vancomycin for the Treatment of Clostridium Difficile-Associated Diarrhoea (CDAD)

NCT02092935
View directory record Official record
Conditions
Clostridium Difficile Infection
Interventions
SMT19969, Vancomycin
Drug
Lead sponsor
Summit Therapeutics
Industry
Eligibility
18 Years to 90 Years
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
24
States / cities
Mobile, Alabama • Laguna Hills, California • Long Beach, California + 21 more
Source: ClinicalTrials.gov public record
Updated Oct 20, 2016 · Synced Oct 20, 2026, 5:36 AM EDT
Terminated Not applicable Interventional Results available

Film Array Gastrointestinal Panel Compared to Usual Care for ED Evaluation of Infectious Diarrhea

NCT03809117
View directory record Official record
Conditions
Infectious Diarrhea
Interventions
Biofire Film Array Gastrointestinal Panel
Diagnostic Test
Lead sponsor
Andrew Meltzer
Other
Eligibility
18 Years and older
Enrollment
74 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Dec 20, 2022 · Synced Oct 20, 2026, 5:36 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

ETEC Logistics Trial (TREK)

NCT00516659
View directory record Official record
Conditions
Diarrhea
Interventions
Heat-Labile Enterotoxin of Escherichia coli (LT), Placebo
Biological
Lead sponsor
Intercell USA, Inc.
Industry
Eligibility
18 Years to 64 Years
Enrollment
201 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2007
U.S. locations
13
States / cities
Long Beach, California • Chicago, Illinois • Baltimore, Maryland + 9 more
Source: ClinicalTrials.gov public record
Updated Mar 14, 2012 · Synced Oct 20, 2026, 5:36 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Trial Evaluating Chemoprophylaxis Against Travelers' Diarrhea - Prevent TD

NCT02498301
View directory record Official record
Conditions
Travelers' Diarrhea, Functional Bowel Disorders, Reactive Arthritis
Interventions
Rifaximin, Placebo
Drug
Lead sponsor
Henry M. Jackson Foundation for the Advancement of Military Medicine
Other
Eligibility
18 Years and older
Enrollment
449 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2019
U.S. locations
5
States / cities
San Diego, California • Honolulu, Hawaii • Marine Corps Base Camp Lejeune, North Carolina + 2 more
Source: ClinicalTrials.gov public record
Updated Feb 15, 2023 · Synced Oct 20, 2026, 5:36 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

Mortality Reduction After Oral Azithromycin: Morbidity Study

NCT02048007
View directory record Official record
Conditions
Childhood Mortality
Interventions
Azithromycin, Placebo
Drug
Lead sponsor
University of California, San Francisco
Other
Eligibility
1 Month and older
Enrollment
72,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2020
U.S. locations
2
States / cities
San Francisco, California • Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 17, 2021 · Synced Oct 20, 2026, 5:36 AM EDT
Completed Phase 1 Interventional

A Study of Letrazuril in the Treatment of AIDS-Related Diarrhea

NCT00001018
View directory record Official record
Conditions
Cryptosporidiosis, HIV Infections
Interventions
Letrazuril
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
13 Years and older
Enrollment
32 participants
Healthy volunteers
Healthy volunteers not accepted
U.S. locations
4
States / cities
Los Angeles, California • New York, New York
Source: ClinicalTrials.gov public record
Updated Jun 24, 2005 · Synced Oct 20, 2026, 5:36 AM EDT
Completed Phase 1 Interventional

A Randomized, Multicenter, Double-Blind, Parallel-Group, Placebo-Controlled Trial of the Efficacy and Safety of Bovine Anti-Cryptosporidium Immunoglobulin (BACI) in the Treatment of Cryptosporidium Enteritis in AIDS Patients

NCT00002248
View directory record Official record
Conditions
Cryptosporidiosis, HIV Infections
Interventions
Cryptosporidium Immune Whey Protein Concentrate (Bovine)
Drug
Lead sponsor
Univax Biologics Inc
Industry
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
U.S. locations
6
States / cities
Los Angeles, California • San Francisco, California • Atlanta, Georgia + 2 more
Source: ClinicalTrials.gov public record
Updated Jun 24, 2005 · Synced Oct 20, 2026, 5:36 AM EDT
Completed Phase 4 Interventional

Probiotics to Prevent Severe Pneumonia and Endotracheal Colonization Trial

NCT02462590
View directory record Official record
Conditions
Ventilator Associated Pneumonia, Infections, C-Difficile, Antibiotic-associated Diarrhea, Diarrhea
Interventions
L. rhamnosus GG - Probiotic, Placebo - Microcrystalline Cellulose
Drug
Lead sponsor
McMaster University
Other
Eligibility
18 Years and older
Enrollment
2,650 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2020
U.S. locations
2
States / cities
Rochester, Minnesota • St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Dec 17, 2020 · Synced Oct 20, 2026, 5:36 AM EDT
Completed Phase 3 Interventional Results available

A Study to Investigate the Safety and Efficacy of Fidaxomicin (Oral Suspension or Tablets) and Vancomycin (Oral Liquid or Capsules) in Pediatric Subjects With Clostridium Difficile-associated Diarrhea (CDAD)

NCT02218372
View directory record Official record
Conditions
Clostridium Difficile-associated Diarrhea (CDAD)
Interventions
Fidaxomicin oral suspension, Fidaxomicin tablets, Vancomycin oral liquid, Vancomycin capsules
Drug
Lead sponsor
Astellas Pharma Europe B.V.
Industry
Eligibility
Up to 17 Years
Enrollment
148 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2018
U.S. locations
14
States / cities
Orange, California • Chicago, Illinois • Indianapolis, Indiana + 11 more
Source: ClinicalTrials.gov public record
Updated Nov 26, 2024 · Synced Oct 20, 2026, 5:36 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Study Confirming A Human Challenge Model and Investigating The Safety Of VLA1701

NCT03576183
View directory record Official record
Conditions
Enterotoxigenic Escherichia Coli Infection, Diarrhea
Interventions
VLA1701, Placebo, Challenge Strain
Biological · Other
Lead sponsor
Valneva Austria GmbH
Industry
Eligibility
18 Years to 49 Years
Enrollment
34 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Apr 23, 2021 · Synced Oct 20, 2026, 5:36 AM EDT