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Showing 1–24 of 130 matching trials from the live ClinicalTrials.gov search.
Local D1 index available.
Filters: Condition: Infectious Disease of Digestive Tract Clear all
Completed Phase 4 Interventional Results available

The Use of Probiotics to Evaluate Colonization With Antimicrobial Resistant Bacteria

NCT01551186
View directory record Official record
Conditions
Infectious Disease of Digestive Tract
Interventions
Lactobacillus rhamnosus GG
Dietary Supplement
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years and older
Enrollment
103 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2013
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Dec 16, 2018 · Synced Sep 24, 2026, 12:43 AM EDT
Suspended No phase listed Observational Accepts healthy volunteers

A Study to Explore the Role of Gut Flora in COVID-19 Infection

NCT04359836
View directory record Official record
Conditions
Gut Microbiome, Gastrointestinal Microbiome, COVID, COVID-19, Corona Virus Infection, Coronavirus, Coronaviridae Infections, Coronavirus 19, Coronavirus-19, COVID 19
Interventions
There is no intervention in this study
Other
Lead sponsor
ProgenaBiome
Other
Eligibility
18 Years and older
Enrollment
250 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2027
U.S. locations
1
States / cities
Ventura, California
Source: ClinicalTrials.gov public record
Updated Sep 20, 2026 · Synced Sep 24, 2026, 12:43 AM EDT
Completed No phase listed Observational

Study of Peripherally Inserted Venous Catheters in Cystic Fibrosis Patients

NCT03674216
View directory record Official record
Conditions
Cystic Fibrosis
Interventions
Not listed
Lead sponsor
Jonathan B. Zuckerman
Other
Eligibility
6 Years and older
Enrollment
260 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2021
U.S. locations
1
States / cities
Portland, Maine
Source: ClinicalTrials.gov public record
Updated Apr 10, 2022 · Synced Sep 24, 2026, 12:43 AM EDT
Completed Not applicable Interventional Results available

Pilot Study on the Effect of Adding Raltegravir +/- a Second Drug on HIV Levels in the Gut

NCT00884793
View directory record Official record
Conditions
HIV Infections
Interventions
raltegravir, Study NNRTI, Study PI
Drug
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years to 65 Years
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2010
U.S. locations
2
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Jul 22, 2012 · Synced Sep 24, 2026, 12:43 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

Effects of Crofelemer on the Gut Microbiome in Healthy Volunteers and in HIV+ Patients With Non-Infectious Diarrhea

NCT04192487
View directory record Official record
Conditions
Acquired Immunodeficiency Syndrome, Healthy Volunteers, HIV/AIDS, HIV Diarrhea, Human Immunodeficiency Virus
Interventions
Crofelemer delayed-release tablets 125mg
Drug
Lead sponsor
Napo Pharmaceuticals, Inc.
Industry
Eligibility
18 Years and older
Enrollment
17 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2021
U.S. locations
3
States / cities
Tustin, California • Stratford, Connecticut • Springfield, Massachusetts
Source: ClinicalTrials.gov public record
Updated Oct 21, 2021 · Synced Sep 24, 2026, 12:43 AM EDT
Not listed No phase listed Observational

Therapeutic Endoscopic Ultrasound for Gastrointestinal Disorders: A Multicenter Registry Study

NCT05051358
View directory record Official record
Conditions
Therapeutic Endoscopic Ultrasound, Advanced Endoscopy, Therapeutic Endoscopy, Interventional Endoscopy, Interventional Endoscopic Ultrasound, Gastro-Intestinal Disorder, Gastrointestinal Disease, Gastrointestinal Cancer, Gastrointestinal Dysfunction, Gastrointestinal Fistula, Gastrointestinal Infection, Gastrointestinal Injury, Pancreatic Disease, Bile Duct Diseases
Interventions
Therapeutic Endoscopic Ultrasound
Procedure
Lead sponsor
Advanced Endoscopy Research, Robert Wood Johnson Medical School Rutgers University
Other
Eligibility
Not listed
Enrollment
5,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
1
States / cities
New Brunswick, New Jersey
Source: ClinicalTrials.gov public record
Updated May 25, 2023 · Synced Sep 24, 2026, 12:43 AM EDT
Terminated Phase 4 Interventional Results available

Comparing Oral Versus Parenteral Antimicrobial Therapy

NCT05977868
View directory record Official record
Conditions
Endovascular Infection, Bone and Joint Infection, Skin and Soft Tissue Infection, Pulmonary Infection, Gastrointestinal Infection, Genitourinary Infection
Interventions
Amoxicillin, amoxicillin-clavulanate, cefadroxil, cefpodoxime, cefalexin, ciprofloxacin, delafloxacin, doxycycline, levofloxacin, linezolid, Ampicillin, ampicillin-sulbactam, cefazolin, cefepime, ceftaroline, ceftazidime, ceftazidime-avibactam, dalbavancin, daptomycin, ertapenem
Drug
Lead sponsor
West Virginia University
Other
Eligibility
18 Years and older
Enrollment
94 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
1
States / cities
Morgantown, West Virginia
Source: ClinicalTrials.gov public record
Updated Aug 25, 2025 · Synced Sep 24, 2026, 12:43 AM EDT
Completed Phase 2 Interventional

Treatment of Cholestatic Pruritus With Sertraline

NCT00058903
View directory record Official record
Conditions
Pruritus, Liver Cirrhosis, Biliary, Hepatitis C
Interventions
sertraline
Drug
Lead sponsor
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
NIH
Eligibility
21 Years to 80 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2005
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Jan 12, 2010 · Synced Sep 24, 2026, 12:43 AM EDT
Withdrawn No phase listed Observational

An Investigation of the Association Between Helicobacter Pylori Infection and Abdominal Pain in Cystic Fibrosis Patients

NCT00765401
View directory record Official record
Conditions
Cystic Fibrosis, Abdominal Pain, Helicobacter Pylori Infection
Interventions
Not listed
Lead sponsor
Penn State University
Other
Eligibility
5 Years to 18 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2011
U.S. locations
1
States / cities
Hershey, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Nov 23, 2017 · Synced Sep 24, 2026, 12:43 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Improving Treatment of Nontuberculous Mycobacterial Infection in Cystic Fibrosis

NCT02372383
View directory record Official record
Conditions
Cystic Fibrosis
Interventions
Ethambutol, Rifampin, Azithromycin, Pancrelipase
Drug
Lead sponsor
University of Colorado, Denver
Other
Eligibility
16 Years to 45 Years
Enrollment
31 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2016
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Feb 10, 2021 · Synced Sep 24, 2026, 12:43 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Kent State University / Price Chopper Employee Wellness Study

NCT03454009
View directory record Official record
Conditions
Acute Respiratory Infection, Influenza-like Illness, Gastrointestinal Infection
Interventions
Multimodal hygiene intervention
Behavioral
Lead sponsor
Kent State University
Other
Eligibility
18 Years and older
Enrollment
195 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018
U.S. locations
1
States / cities
Schenectady, New York
Source: ClinicalTrials.gov public record
Updated Apr 30, 2019 · Synced Sep 24, 2026, 12:43 AM EDT
Completed Not applicable Interventional

Feasibility of a Hepatitis C Virus (HCV) Decision-Making Intervention Among HIV-infected Adults

NCT01472354
View directory record Official record
Conditions
Hepatitis c
Interventions
Leap-c group intervention
Behavioral
Lead sponsor
University of Massachusetts, Worcester
Other
Eligibility
18 Years and older
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
1
States / cities
Worcester, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 29, 2013 · Synced Sep 24, 2026, 12:43 AM EDT
Completed Phase 4 Interventional Results available

Population Pharmacokinetics of Prolonged Infusion Meropenem in Cystic Fibrosis (CF) Children

NCT01429259
View directory record Official record
Conditions
Cystic Fibrosis, Pneumonia, Pseudomonas Aeruginosa Infection
Interventions
meropenem
Drug
Lead sponsor
Joseph Kuti
Other
Eligibility
6 Years to 17 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
7
States / cities
Hartford, Connecticut • Indianapolis, Indiana • New York, New York + 4 more
Source: ClinicalTrials.gov public record
Updated Mar 19, 2018 · Synced Sep 24, 2026, 12:43 AM EDT
Completed Not applicable Interventional

Pneumococcal Vaccine and Routine Pediatric Immunizations in HIV-Infected Children Receiving Anti-HIV Drugs

NCT00013871
View directory record Official record
Conditions
HIV Infections, Hepatitis B, Measles, Pneumococcal Infections, Pertussis
Interventions
Diphtheria & Tetanus Toxoids & Acellular Pertussis Vaccine Adsorbed, Measles-Mumps-Rubella Vaccine (Live), Pneumococcal Vaccine, Polyvalent (23-valent), Pneumococcal Conjugate Vaccine, Heptavalent, Hepatitis B Vaccine (Recombinant)
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
2 Years to 18 Years
Enrollment
300 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Ends 2004
U.S. locations
38
States / cities
Birmingham, Alabama • Long Beach, California • Los Angeles, California + 26 more
Source: ClinicalTrials.gov public record
Updated Oct 31, 2021 · Synced Sep 24, 2026, 12:43 AM EDT
Completed Not applicable Interventional Results available

Prospective Study to Investigate the Frequency of Possible Bacterial Entry Into the Bloodstream (Bacteremia) and Infectious Complications Associated With the Use of the Spyglass Cholangioscopy System During ERCP (Endoscopic Retrograde Cholangiopancreatography).

NCT01414400
View directory record Official record
Conditions
Bile Duct Stricture, Choledocholithiasis
Interventions
Blood draw for culture
Other
Lead sponsor
Stanford University
Other
Eligibility
18 Years to 80 Years
Enrollment
72 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2015
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Mar 13, 2025 · Synced Sep 24, 2026, 12:43 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Creation of an E-toileting Log Through Classification of the Physical Properties of Stool and Urine Using TrueLoo™

NCT05008640
View directory record Official record
Conditions
Urinary Tract Infections, Infectious Diarrhea, Clostridium Difficile Infection, Gastrointestinal Disease, GastroIntestinal Bleeding
Interventions
TrueLoo™
Device
Lead sponsor
Toi Labs, Inc.
Industry
Eligibility
55 Years and older
Enrollment
143 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2021
U.S. locations
6
States / cities
Concord, California • Davis, California • Elk Grove, California + 2 more
Source: ClinicalTrials.gov public record
Updated Aug 16, 2021 · Synced Sep 24, 2026, 12:43 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Walnut and Immunity Study

NCT05915390
View directory record Official record
Conditions
Immune Response, Upper Respiratory Tract Infection
Interventions
walnuts, Habitual diet
Dietary Supplement
Lead sponsor
Loma Linda University
Other
Eligibility
55 Years to 75 Years
Enrollment
52 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023
U.S. locations
1
States / cities
Loma Linda, California
Source: ClinicalTrials.gov public record
Updated Oct 1, 2024 · Synced Sep 24, 2026, 12:43 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 16, 2021 · Synced Sep 24, 2026, 12:43 AM EDT
Terminated Phase 1 Interventional Results available

Nivolumab and Ipilimumab in Treating Patients With HIV Associated Relapsed or Refractory Classical Hodgkin Lymphoma or Solid Tumors That Are Metastatic or Cannot Be Removed by Surgery

NCT02408861
View directory record Official record
Conditions
Advanced Malignant Solid Neoplasm, Anal Carcinoma, HIV Infection, Kaposi Sarcoma, Lung Carcinoma, Metastatic Malignant Solid Neoplasm, Recurrent Classic Hodgkin Lymphoma, Refractory Classic Hodgkin Lymphoma, Unresectable Solid Neoplasm, HIV-associated Cancers
Interventions
Biospecimen Collection, Bone Marrow Biopsy, Computed Tomography, Ipilimumab, Nivolumab, Positron Emission Tomography
Procedure · Biological
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
18 Years and older
Enrollment
79 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2024
U.S. locations
32
States / cities
La Jolla, California • Los Angeles, California • Sacramento, California + 19 more
Source: ClinicalTrials.gov public record
Updated Jan 20, 2026 · Synced Sep 24, 2026, 12:43 AM EDT
Completed Phase 1 Interventional

Cipro Inhaler for Cystic Fibrosis Children Ages 6-12

NCT00910351
View directory record Official record
Conditions
Pseudomonas Infection
Interventions
Ciprofloxacin (Cipro, BAYQ3939)
Drug
Lead sponsor
Bayer
Industry
Eligibility
6 Years to 12 Years
Enrollment
19 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
4
States / cities
Atlanta, Georgia • Baltimore, Maryland • Boston, Massachusetts + 1 more
Source: ClinicalTrials.gov public record
Updated Nov 20, 2013 · Synced Sep 24, 2026, 12:43 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Randomized Controlled Trial of Social Network Targeting in Honduras

NCT02694679
View directory record Official record
Conditions
Preterm Delivery, Hypothermia, Diarrhea, Upper Respiratory Infection, Omphalitis
Interventions
CBNH
Behavioral
Lead sponsor
Yale University
Other
Eligibility
12 Years and older
Enrollment
31,195 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2020
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Aug 7, 2023 · Synced Sep 24, 2026, 12:43 AM EDT
Completed Not applicable Interventional

Enhancing Electronic Health Systems to Decrease the Burden of Colon Cancer, Lung Cancer, Obesity, Vaccine-Preventable Illness, and LivER Cancer

NCT04540081
View directory record Official record
Conditions
Colon Cancer, Lung Cancer, Tobacco Use Cessation, Obesity, Pneumonia, Bacterial, Shingles, Hepatitis C
Interventions
Epic Healthy Planet Population Health Module
Other
Lead sponsor
University of California, Davis
Other
Eligibility
50 Years to 80 Years
Enrollment
20,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
1
States / cities
Sacramento, California
Source: ClinicalTrials.gov public record
Updated Dec 26, 2023 · Synced Sep 24, 2026, 12:43 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

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

NCT00228254
View directory record Official record
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
Source: ClinicalTrials.gov public record
Updated Sep 27, 2005 · Synced Sep 24, 2026, 12:43 AM EDT
Enrolling by invitation No phase listed Observational

Prospective Healthcare-Associated Links in Transmission of Nontuberculous Mycobacteria

NCT05686837
View directory record Official record
Conditions
Cystic Fibrosis, Nontuberculous Mycobacterial Pulmonary Infection
Interventions
Not listed
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
1 Month to 99 Years
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2027
U.S. locations
7
States / cities
Denver, Colorado • Baltimore, Maryland • Austin, Texas + 4 more
Source: ClinicalTrials.gov public record
Updated Oct 19, 2025 · Synced Sep 24, 2026, 12:43 AM EDT