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ClinicalTrials.gov public records Last synced Jun 10, 2026, 3:28 AM EDT

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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
Local D1 index available.
Completed Phase 2Phase 3 Interventional Accepts healthy volunteers Results available

Efficacy of Rifaximin in Preventing Campylobacteriosis

NCT02280044
Conditions
Dysentery, Diarrhea, Enteric Campylobacteriosis
Interventions
Rifaximin intervention, Placebo intervention
Biological
Lead sponsor
Johns Hopkins Bloomberg School of Public Health
Other
Eligibility
18 Years to 50 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2016
U.S. locations
1
States / cities
Baltimore, Maryland
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Controlled Human Infection Model Challenge/Rechallenge

NCT04992520
Conditions
Shigellosis
Interventions
Shigella sonnei 53G, Shigella flexneri 2a 2457T
Biological
Lead sponsor
PATH
Other
Eligibility
18 Years to 50 Years
Enrollment
46 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Baltimore, Maryland
Completed Not applicable Interventional Accepts healthy volunteers

Social Network Interventions in Rural Honduras

NCT01672580
Conditions
Malnutrition, Dysentery, Social Transmission of Health Behaviors
Interventions
exposure to vitamin use, exposure to water chlorination, high in-degree, nominated by random
Behavioral
Lead sponsor
Harvard University
Other
Eligibility
15 Years and older
Enrollment
5,773 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2014
U.S. locations
1
States / cities
New Haven, Connecticut
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
Conditions
Diarrhea, Gastroenteritis, Bacterial Infection
Interventions
Rifaximin 200 mg Tablet, Oral Rehydration Therapy (ORT)
Drug · Other
Lead sponsor
Bausch Health Americas, Inc.
Industry
Eligibility
6 Years to 12 Years
Enrollment
54 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
5
States / cities
Hialeah, Florida • Miami, Florida • Rosharon, Texas + 1 more
Completed Phase 1 Interventional Accepts healthy volunteers

Phase 1 Study of dmLT ID Vaccination in Healthy Adults

NCT02531685
Conditions
Gastroenteritis Escherichia Coli
Interventions
Placebo, Recombinant Double Mutant Heat-Labile Toxin LT(R192G/L211A) (dmLT) Oral enterotoxigenic Escherichia coli (ETEC) Vaccine
Other · Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 45 Years
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2020
U.S. locations
1
States / cities
Cincinnati, Ohio
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
Conditions
HIV Infections
Interventions
Acupuncture, Moxibustion
Procedure
Lead sponsor
National Center for Complementary and Integrative Health (NCCIH)
NIH
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
1999 – 2003
U.S. locations
1
States / cities
New York, New York
Conditions
Cryptosporidiosis, HIV Infections
Interventions
Spiramycin
Drug
Lead sponsor
Rhone-Poulenc Rorer
Industry
Eligibility
13 Years and older
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
U.S. locations
7
States / cities
San Diego, California • Baltimore, Maryland • Worcester, Massachusetts + 3 more
Conditions
HIV Associated Diarrhea
Interventions
Crofelemer 125 mg, Crofelemer 250 mg, Crofelemer 500 mg, Placebo
Drug
Lead sponsor
Bausch Health Americas, Inc.
Industry
Eligibility
18 Years and older
Enrollment
374 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2011
U.S. locations
79
States / cities
Huntsville, Alabama • Phoenix, Arizona • Little Rock, Arkansas + 53 more
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
Completed Phase 1 Interventional Accepts healthy volunteers

Invaplex 50 Vaccine Dose-Ranging

NCT00082069
Conditions
Diarrhea
Interventions
Shigella flexneri 2a Invaplex 50
Biological
Lead sponsor
U.S. Army Medical Research and Development Command
Federal
Eligibility
18 Years to 40 Years
Enrollment
32 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2006
U.S. locations
1
States / cities
Silver Spring, Maryland
Conditions
Diarrhea, HIV Infections
Interventions
Dietary intervention, HIV Self-Care
Behavioral
Lead sponsor
Columbia University
Other
Eligibility
18 Years and older
Enrollment
75 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1996 – 2003
U.S. locations
1
States / cities
New York, New York
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
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Wells and Enteric Disease Transmission

NCT04826991
Conditions
Diarrhea, Gastrointestinal Infection, Respiratory Viral Infection, Waterborne Diseases
Interventions
Active UV Device, Inactive UV Device
Device
Lead sponsor
Temple University
Other
Eligibility
6 Months to 59 Months
Enrollment
908 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2027
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Completed Phase 4 Interventional Accepts healthy volunteers

Vitamin A and Zinc: Prevention of Pneumonia (VAZPOP) Study

NCT00228254
Conditions
Pneumonia, Diarrhea, Acute Upper Respiratory Tract Infections
Interventions
Zinc (12.5 mg/day), vitamin A 10,000 IU per week
Drug
Lead sponsor
Tufts University
Other
Eligibility
6 Months to 36 Months
Enrollment
2,582 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2000 – 2004
U.S. locations
1
States / cities
Boston, Massachusetts
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
Conditions
Cryptosporidiosis, HIV Infections
Interventions
Diclazuril
Drug
Lead sponsor
Janssen, LP
Industry
Eligibility
12 Years to 65 Years
Healthy volunteers
Healthy volunteers not accepted
U.S. locations
3
States / cities
New York, New York
Completed Phase 2 Interventional Accepts healthy volunteers

ETEC Logistics Trial (TREK)

NCT00516659
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
Conditions
Shigella
Interventions
CVD 1208S, Challenge strain of wild-type Shigella flexneri 2a
Biological
Lead sponsor
University of Maryland, Baltimore
Other
Eligibility
18 Years to 45 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010
U.S. locations
2
States / cities
Baltimore, Maryland
Conditions
Recurrent Clostridium Difficile Infection, Clostridium Difficile Infection, CDI, C.Difficile Diarrhea, C. Diff Colitis, C.Difficile Colitis
Interventions
Vancomycin, Placebo
Drug
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years and older
Enrollment
79 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2023
U.S. locations
2
States / cities
Madison, Wisconsin • Milwaukee, Wisconsin
Conditions
Clostridium Difficile Infection
Interventions
MGB-BP-3
Drug
Lead sponsor
MGB Biopharma Limited
Industry
Eligibility
18 Years and older
Enrollment
34 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2020
U.S. locations
8
States / cities
Miami, Florida • Orlando, Florida • Idaho Falls, Idaho + 5 more
Conditions
Clostridium Difficile Infection (CDI)
Interventions
RBX2660, Placebo, Open label RBX2660 (only for confirmed CDI recurrence)
Drug
Lead sponsor
Rebiotix Inc.
Industry
Eligibility
18 Years and older
Enrollment
320 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2020
U.S. locations
60
States / cities
Athens, Alabama • Dothan, Alabama • Phoenix, Arizona + 54 more
Conditions
Clostridioides Difficile Infection
Interventions
Ridinilazole, Vancomycin
Drug
Lead sponsor
Summit Therapeutics
Industry
Eligibility
12 Years to 17 Years
Enrollment
2 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
18
States / cities
Los Angeles, California • Orange, California • Miami, Florida + 11 more