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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: E.Coli Infections Clear all
Completed Phase 2 Interventional Accepts healthy volunteers

Efficacy Study of IM Administered CssBA+dmLT Against Moderate-severe Diarrhea in Human Infection Model With ETEC Strain B7A in Healthy Adults

NCT06692907
View directory record Official record
Conditions
Escherichia Infection
Interventions
B7A (ETEC challenge strain), CssBA, dmLT, Placebo
Other · Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 49 Years
Enrollment
72 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
2
States / cities
Baltimore, Maryland • Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Apr 16, 2026 · Synced Jul 23, 2026, 5:45 AM EDT
Completed Phase 1 Interventional

E. Coli for Prevention of Catheter UTI in SCI Patients

NCT00458471
View directory record Official record
Conditions
Urinary Tract Infection(UTI)
Interventions
Insertion of a urinary catheter coated with benign E. coli
Device
Lead sponsor
Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)
NIH
Eligibility
18 Years to 64 Years
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2005
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Apr 9, 2007 · Synced Jul 23, 2026, 5:45 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Safety and Immunogenicity of Peru-15-pCTB in Healthy Adult Subjects

NCT00654108
View directory record Official record
Conditions
Gastroenteritis Escherichia Coli
Interventions
Ciprofloxacin, Peru-15-pCTB, Sodium bicarbonate/Ascorbic Acid/Aspartame Buffer
Drug · Biological · Other
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 45 Years
Enrollment
62 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2010
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Jul 28, 2021 · Synced Jul 23, 2026, 5:45 AM EDT
Completed No phase listed Observational

Clinical and Microbiologic Characteristics of Cephalosporin-Resistant E. Coli-PITT Protocol

NCT00877708
View directory record Official record
Conditions
E Coli Infections
Interventions
Not listed
Lead sponsor
University of Pittsburgh
Other
Eligibility
18 Years and older
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2017
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jun 13, 2018 · Synced Jul 23, 2026, 5:45 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Dose Escalating Study of a Prototype CS6 Subunit Vaccine With a Modified Heat-labile Enterotoxin From Enterotoxigenic Escherichia Coli (ETEC)

NCT03404674
View directory record Official record
Conditions
Diarrhea
Interventions
CssBA, dmLT
Biological
Lead sponsor
PATH
Other
Eligibility
18 Years to 45 Years
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
1
States / cities
Silver Spring, Maryland
Source: ClinicalTrials.gov public record
Updated Jan 5, 2021 · Synced Jul 23, 2026, 5:45 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 22, 2021 · Synced Jul 23, 2026, 5:45 AM EDT
Recruiting Not applicable Interventional

Gram-Negative Bloodstream Infection Oral Antibiotic Therapy Trial

NCT06080698
View directory record Official record
Conditions
Gram-negative Bacteremia
Interventions
Intravenous Antibiotics, Oral Antibiotics
Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years and older
Enrollment
1,030 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2027
U.S. locations
11
States / cities
San Francisco, California • Denver, Colorado • Baltimore, Maryland + 7 more
Source: ClinicalTrials.gov public record
Updated Mar 10, 2026 · Synced Jul 23, 2026, 5:45 AM EDT
Recruiting Phase 1Phase 2 Interventional Accepts healthy volunteers

A Study on the Safety and Immune Response of a Urinary Tract Infection (UTI) Vaccine in Adults 18-64 Years of Age and Clinical Efficacy in Females 18-64 Years of Age

NCT06702449
View directory record Official record
Conditions
Urinary Tract Infections
Interventions
Candidate UTI vaccine low dose formulation 1, Candidate UTI vaccine low dose formulation 2, Candidate UTI vaccine medium dose formulation 1, Candidate UTI vaccine medium dose formulation 2, Candidate UTI vaccine high dose formulation 1, Candidate UTI vaccine high dose formulation 2, Candidate UTI vaccine HTD formulation 2, Placebo
Combination Product
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years to 64 Years
Enrollment
448 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2027
U.S. locations
6
States / cities
Lenexa, Kansas • Secaucus, New Jersey • Rochester, New York + 3 more
Source: ClinicalTrials.gov public record
Updated Apr 20, 2026 · Synced Jul 23, 2026, 5:45 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Evaluation of Safety, Reactogenicity and Immunogenicity of Fractional-dose Inactivated Polio Vaccine (fIPV) Given Intradermally With Double Mutant Enterotoxigenic Escherichia Coli Heat Labile Toxin (dmLT) Adjuvant

NCT03922061
View directory record Official record
Conditions
Polio
Interventions
dmLT, fIPV
Biological
Lead sponsor
University of Vermont
Other
Eligibility
18 Years to 45 Years
Enrollment
29 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
Burlington, Vermont
Source: ClinicalTrials.gov public record
Updated Aug 4, 2020 · Synced Jul 23, 2026, 5:45 AM EDT
Not yet recruiting Phase 2 Interventional

Cefotetan Therapy for Escherichia Coli Infections

NCT07318584
View directory record Official record
Conditions
E Coli Infection, ESBL Producing E.Coli
Interventions
Cefotetan, Carbapenems, Beta Lactam Antibiotics
Drug
Lead sponsor
Oregon Health and Science University
Other
Eligibility
18 Years and older
Enrollment
84 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Jan 5, 2026 · Synced Jul 23, 2026, 5:45 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effects of a Cranberry Beverage on Women With Recent History of Urinary Tract Infections

NCT01776021
View directory record Official record
Conditions
Urinary Tract Infections, Infection, Urologic Diseases
Interventions
cranberry juice, placebo beverage
Other
Lead sponsor
Ocean Spray Cranberries, Inc.
Industry
Eligibility
20 Years to 70 Years · Female only
Enrollment
330 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2015
U.S. locations
17
States / cities
Chandler, Arizona • Scottsdale, Arizona • San Diego, California + 14 more
Source: ClinicalTrials.gov public record
Updated Apr 26, 2015 · Synced Jul 23, 2026, 5:45 AM EDT
Recruiting Phase 1Phase 2 Interventional

Phase 1b/2a Randomized Double-blind Study to Investigate Safety Tolerability PK PD Preliminary Efficacy of Oral Administration of SNIPR001 in Patients With Hematologic Malignancy Scheduled for Allogeneic Hematopoietic Stem-Cell Transplant Receiving FQ Prophylaxis & Harboring FQR Ecoli Pre-Transplant

NCT06938867
View directory record Official record
Conditions
E Coli Infections, Allogenic Transplant Patients
Interventions
SNIPR001 consists of genetically modified bacteriophages specifically targeting Escherichia coli, Placebo 10 mL
Biological · Other
Lead sponsor
SNIPR Biome Aps.
Industry
Eligibility
18 Years and older
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
8
States / cities
Duarte, California • San Francisco, California • Baltimore, Maryland + 5 more
Source: ClinicalTrials.gov public record
Updated Oct 13, 2025 · Synced Jul 23, 2026, 5:45 AM EDT
Completed No phase listed Observational

Multi-Drug Resistant Organism (MDRO): Study of Highly Resistant Escherichia Coli

NCT04574596
View directory record Official record
Conditions
E Coli Infection
Interventions
no Intervention
Other
Lead sponsor
Duke University
Other
Eligibility
Not listed
Enrollment
300 participants
Timeline
2020 – 2021
U.S. locations
13
States / cities
Torrance, California • Aurora, Colorado • Atlanta, Georgia + 10 more
Source: ClinicalTrials.gov public record
Updated Jul 26, 2021 · Synced Jul 23, 2026, 5:45 AM EDT
Completed No phase listed Observational

Incidence of Antibiotic Resistant E.Coli in Patients Undergoing Repeat Prostate Biopsy

NCT00915213
View directory record Official record
Conditions
Bacterial Infection
Interventions
Not listed
Lead sponsor
University of California, Irvine
Other
Eligibility
18 Years and older · Male only
Enrollment
136 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2014
U.S. locations
3
States / cities
Irvine, California • Long Beach, California • Orange, California
Source: ClinicalTrials.gov public record
Updated Dec 18, 2016 · Synced Jul 23, 2026, 5:45 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

ACE527 Safety and Immunogenicity Study

NCT00901654
View directory record Official record
Conditions
Enterotoxigenic E. Coli (ETEC) Infection
Interventions
ACE527 vaccine, Placebo vaccine
Biological
Lead sponsor
TD Vaccines A/S
Industry
Eligibility
18 Years to 50 Years
Enrollment
36 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jan 28, 2010 · Synced Jul 23, 2026, 5:45 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 13, 2012 · Synced Jul 23, 2026, 5:45 AM EDT
Terminated Phase 1 Interventional Accepts healthy volunteers Results available

A Double-Blind Placebo-Control Dose Escalating Study to Evaluate the Safety and Immunogenicity of dmLT by Oral, Sublingual and Intradermal Vaccination in Adults Residing in an Endemic Area

NCT03548064
View directory record Official record
Conditions
Gastroenteritis Escherichia Coli, Immunisation
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
75 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated May 20, 2025 · Synced Jul 23, 2026, 5:45 AM EDT
Completed Phase 1 Interventional Results available

Safety, Tolerability, Pharmacokinetic and Microbiological Investigation of GSK3882347 in Female Participants With Urinary Tract Infections

NCT05138822
View directory record Official record
Conditions
Uncomplicated Urinary Tract Infections, Urinary Tract Infections
Interventions
GSK3882347, Nitrofurantoin, Placebo
Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years to 70 Years · Female only
Enrollment
140 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
15
States / cities
Anniston, Alabama • Lomita, California • Modesto, California + 12 more
Source: ClinicalTrials.gov public record
Updated Mar 12, 2026 · Synced Jul 23, 2026, 5:45 AM EDT
Completed Phase 2 Interventional Results available

The SCOUT Study: "Short Course Therapy for Urinary Tract Infections in Children"

NCT01595529
View directory record Official record
Conditions
Urinary Tract Infection
Interventions
Cefixime, Cephalexin, Placebo, Trimethoprim/Sulfamethoxazole
Drug · Other
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
2 Months to 10 Years
Enrollment
717 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2019
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 5, 2020 · Synced Jul 23, 2026, 5:45 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Clinical Experiment of Helicobacter Pylori Transmission

NCT00550368
View directory record Official record
Conditions
Infection, Achlorhydria
Interventions
Biological intervention: Enteropathogenic E. coli
Biological
Lead sponsor
Stanford University
Other
Eligibility
35 Years to 59 Years
Enrollment
45 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2009
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Dec 5, 2016 · Synced Jul 23, 2026, 5:45 AM EDT
Completed Phase 3 Interventional Results available

Calaspargase Pegol or Pegaspargase and Combination Chemotherapy in Treating Younger Patients With Newly Diagnosed High-Risk Acute Lymphoblastic Leukemia

NCT00671034
View directory record Official record
Conditions
Acute Lymphoblastic Leukemia, Adult B Acute Lymphoblastic Leukemia, Childhood B Acute Lymphoblastic Leukemia
Interventions
Calaspargase Pegol-mknl, Cyclophosphamide, Cytarabine, Daunorubicin Hydrochloride, Dexamethasone, Doxorubicin Hydrochloride, Laboratory Biomarker Analysis, Mercaptopurine, Methotrexate, Pegaspargase, Pharmacological Study, Prednisone, Radiation Therapy, Thioguanine, Vincristine Sulfate
Drug · Other · Radiation
Lead sponsor
Children's Oncology Group
Network
Eligibility
2 Years to 30 Years
Enrollment
166 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2021
U.S. locations
27
States / cities
Birmingham, Alabama • Orange, California • Palo Alto, California + 22 more
Source: ClinicalTrials.gov public record
Updated Apr 26, 2021 · Synced Jul 23, 2026, 5:45 AM EDT
Completed No phase listed Observational

Study to Collect Information About Invasive Disease Caused by Extraintestinal Pathogenic Escherichia Coli-2 (EXPECT-2)

NCT04117113
View directory record Official record
Conditions
E. Coli Infection
Interventions
Not listed
Lead sponsor
UMC Utrecht
Other
Eligibility
60 Years and older
Enrollment
238 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Sep 20, 2021 · Synced Jul 23, 2026, 5:45 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Safety Study of Recombinant Vaccine to Prevent ETEC Diarrhea

NCT01382095
View directory record Official record
Conditions
Escherichia Coli Infection
Interventions
Recombinant fimbrial adhesin dscCfaE, Modified E. coli heat labile enterotoxin LTR192G
Biological
Lead sponsor
U.S. Army Medical Research and Development Command
Federal
Eligibility
18 Years to 45 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2013
U.S. locations
1
States / cities
Silver Spring, Maryland
Source: ClinicalTrials.gov public record
Updated Apr 26, 2015 · Synced Jul 23, 2026, 5:45 AM EDT
Terminated Phase 1 Interventional Accepts healthy volunteers

Enteroaggregative E.Coli (EAEC)

NCT00362869
View directory record Official record
Conditions
Escherichia Coli Infections
Interventions
Levofloxacin, Placebo, Enteroaggregative E. coli (EAEC)
Drug · Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 40 Years
Enrollment
5 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Dec 25, 2016 · Synced Jul 23, 2026, 5:45 AM EDT