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Showing 1–24 of 30 matching trials from the live ClinicalTrials.gov search.
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Completed Phase 1 Interventional Accepts healthy volunteers

Phase 1 Study of dmLT ID Vaccination in Healthy Adults

NCT02531685
View directory record Official record
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
Source: ClinicalTrials.gov public record
Updated Oct 25, 2020 · Synced Sep 27, 2026, 10:26 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Safety Study of Chimeric Vaccine to Prevent ETEC Diarrhea

NCT01644565
View directory record Official record
Conditions
Escherichia Coli Infection
Interventions
Recombinant fimbrial adhesin dsc14CfaE-sCTA2/LTB5, 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
57 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2015
U.S. locations
1
States / cities
Silver Spring, Maryland
Source: ClinicalTrials.gov public record
Updated Feb 11, 2021 · Synced Sep 27, 2026, 10:26 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Challenge Study of an ETEC Vaccine

NCT01922856
View directory record Official record
Conditions
Enteritis; Escherichia Coli, Enterotoxigenic
Interventions
LTR192G with dscCfaE, No Intervention
Biological · Other
Lead sponsor
U.S. Army Medical Research and Development Command
Federal
Eligibility
18 Years to 50 Years
Enrollment
56 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2016
U.S. locations
2
States / cities
Baltimore, Maryland • Silver Spring, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 5, 2017 · Synced Sep 27, 2026, 10:26 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Safety and Immunogenicity Study of Traveler's Diarrhea Vaccine Patch

NCT01067781
View directory record Official record
Conditions
Diarrhea
Interventions
Heat-Labile Enterotoxin of E. coli (LT), Placebo
Biological
Lead sponsor
Intercell USA, Inc.
Industry
Eligibility
18 Years to 64 Years
Enrollment
600 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2012
U.S. locations
5
States / cities
Anaheim, California • South Miami, Florida • Lenexa, Kansas + 2 more
Source: ClinicalTrials.gov public record
Updated Feb 9, 2020 · Synced Sep 27, 2026, 10:26 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Safety and Efficacy Study of a Vaccine Against Enterotoxigenic Escherichia Coli (ETEC) to Prevent Moderate to Severe Diarrhea

NCT01060748
View directory record Official record
Conditions
Diarrhea
Interventions
ACE527, Placebo
Biological
Lead sponsor
TD Vaccines A/S
Industry
Eligibility
18 Years to 50 Years
Enrollment
70 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 6, 2011 · Synced Sep 27, 2026, 10:26 PM EDT
Active, not recruiting Phase 2 Interventional Results available

pTVG-HP DNA Vaccine With or Without pTVG-AR DNA Vaccine and Pembrolizumab in Patients With Castration-Resistant, Metastatic Prostate Cancer

NCT04090528
View directory record Official record
Conditions
Castration-resistant Prostate Cancer, Metastatic Cancer, Prostate Cancer
Interventions
pTVG-HP, pTVG-AR, Pembrolizumab
Biological · Drug
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years and older · Male only
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2027
U.S. locations
2
States / cities
St Louis, Missouri • Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Aug 25, 2026 · Synced Sep 27, 2026, 10:26 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Prevention, Randomized, Double-Blinded, Placebo-Controlled, Parallel Assignment, Safety/Efficacy Study

NCT00672035
View directory record Official record
Conditions
Traveler's Diarrhea
Interventions
Biological: heat-labile enterotoxin of E. coli (LT)
Biological
Lead sponsor
Intercell USA, Inc.
Industry
Eligibility
18 Years to 40 Years
Enrollment
406 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2008
U.S. locations
5
States / cities
Davis, California • Bingham Farms, Michigan • Cortland, New York + 2 more
Source: ClinicalTrials.gov public record
Updated Mar 13, 2012 · Synced Sep 27, 2026, 10:26 PM EDT
Terminated Phase 2 Interventional Accepts healthy volunteers

UMD rPA Regimen Trial in Adults

NCT00133484
View directory record Official record
Conditions
Bacillus Anthracis (Anthrax)
Interventions
Anthrax vaccine absorbed made from Bacillus anthracis (AVA), Recombinant protein antigen (rPA) made from Bacillus anthrax, Recombinant protein antigen (rPA) made from Escherichia coli
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 50 Years
Enrollment
270 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
Ends 2007
U.S. locations
2
States / cities
Baltimore, Maryland • Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Aug 26, 2010 · Synced Sep 27, 2026, 10:26 PM 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 Sep 27, 2026, 10:26 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Trial of a Falciparum Malaria Protein (FMP012), E. Coli-expressed PfCelTOS, in Healthy Malaria-Naive Adults

NCT01540474
View directory record Official record
Conditions
Malaria
Interventions
Group 1: 10 ug FMP012 with 2 ug GLA-SE, Group 2: 10 ug FMP012 with 5 ug GLA-SE, 50 ug FMP012 with 5 ug GLA-SE or 2 ug GLA-SE, Controlled group-Challenged Only: no vaccination
Biological · Other
Lead sponsor
U.S. Army Medical Research and Development Command
Federal
Eligibility
18 Years to 50 Years
Enrollment
36 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012
U.S. locations
1
States / cities
Silver Spring, Maryland
Source: ClinicalTrials.gov public record
Updated Jun 7, 2021 · Synced Sep 27, 2026, 10:26 PM 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 Sep 27, 2026, 10:26 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Peanut Allergy Vaccine Study in Healthy and Peanut-allergic Adults

NCT00850668
View directory record Official record
Conditions
Food Hypersensitivity, Hypersensitivity, Immediate Hypersensitivity, Peanut Hypersensitivity
Interventions
E. Coli-Encapsulated, Recombinant Modified Peanut Proteins Ara h 1, Ara h 2, and Ara h 3
Biological
Lead sponsor
Allertein Therapeutics, LLC
Industry
Eligibility
18 Years to 50 Years
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2010
U.S. locations
2
States / cities
Baltimore, Maryland • New York, New York
Source: ClinicalTrials.gov public record
Updated May 26, 2013 · Synced Sep 27, 2026, 10:26 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

LT Vaccine Patch Self-Administration Study

NCT00565461
View directory record Official record
Conditions
Prevention of Travelers' Diarrhea
Interventions
heat-labile enterotoxin of E. coli (LT)
Biological
Lead sponsor
Intercell USA, Inc.
Industry
Eligibility
18 Years to 64 Years
Enrollment
160 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2008
U.S. locations
3
States / cities
Little Rock, Arkansas • South Miami, Florida • Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Mar 29, 2020 · Synced Sep 27, 2026, 10:26 PM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers

Safety and Preliminary Efficacy of the Malaria Vaccine Candidates Falciparum Merozoite Protein-1 (FMP1) and SmithKlineBeecham (SKBB) Candidate Malaria Vaccine RTS,S

NCT01556945
View directory record Official record
Conditions
Malaria, Falciparum
Interventions
FMP1/AS02, RTS,S/AS02, AS02 adjuvant alone, Malaria challenge
Biological · Other
Lead sponsor
U.S. Army Medical Research and Development Command
Federal
Eligibility
18 Years to 45 Years
Enrollment
72 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
Started 2001
U.S. locations
1
States / cities
Silver Spring, Maryland
Source: ClinicalTrials.gov public record
Updated May 1, 2014 · Synced Sep 27, 2026, 10:26 PM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

Live Attenuated ETEC Vaccine ACE527 With and Without dmLT Adjuvant in Adults

NCT01739231
View directory record Official record
Conditions
Diarrhea
Interventions
ACE527, dmLT, CeraVacx placebo, H10407 challenge strain
Biological
Lead sponsor
PATH
Other
Eligibility
18 Years to 50 Years
Enrollment
81 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2014
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Feb 11, 2019 · Synced Sep 27, 2026, 10:26 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Low-dose Challenge Model With Enterotoxigenic E Coli

NCT00844493
View directory record Official record
Conditions
Diarrhea
Interventions
E coli strain H10407 and buffer, E coli H10407 and buffer
Biological
Lead sponsor
Johns Hopkins Bloomberg School of Public Health
Other
Eligibility
18 Years to 45 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2013
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Sep 11, 2014 · Synced Sep 27, 2026, 10:26 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

A Study of 9-valent Extraintestinal Pathogenic Escherichia Coli Vaccine (ExPEC9V) and High-dose Quadrivalent Influenza Vaccine, With and Without Co-administration, in Adults Aged 65 Years or Older

NCT06134804
View directory record Official record
Conditions
Invasive Extraintestinal Pathogenic Escherichia Coli Disease (IED) Prevention
Interventions
ExPEC9V, Placebo, HD quadrivalent influenza vaccine
Biological
Lead sponsor
Janssen Research & Development, LLC
Industry
Eligibility
65 Years and older
Enrollment
959 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
24
States / cities
Huntsville, Alabama • Mobile, Alabama • San Diego, California + 19 more
Source: ClinicalTrials.gov public record
Updated Apr 2, 2026 · Synced Sep 27, 2026, 10:26 PM EDT
Recruiting Phase 1 Interventional Accepts healthy volunteers

A Study to Learn About a Vaccine Against E Coli in Healthy Adults

NCT07122986
View directory record Official record
Conditions
Healthy Participants
Interventions
E coli vaccine 1 Dose A, E coli vaccine 1 Dose B, E coli vaccine 2, E coli vaccine 3, E coli Vaccine 4 Dose A, E coli Vaccine 4 Dose B, E coli Vaccine 4 Dose C, E coli Vaccine 5 Dose A, E coli Vaccine 5 Dose B, Placebo
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years to 64 Years
Enrollment
310 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2028
U.S. locations
11
States / cities
Anaheim, California • Lake Forest, California • Walnut Creek, California + 6 more
Source: ClinicalTrials.gov public record
Updated Apr 29, 2026 · Synced Sep 27, 2026, 10:26 PM 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 1, 2026 · Synced Sep 27, 2026, 10:26 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Traveler's Diarrhea (TD) Automated Process

NCT00751777
View directory record Official record
Conditions
Prevention of Travelers' Diarrhea
Interventions
heat-labile enterotoxin of E. coli (LT), Placebo
Biological
Lead sponsor
Intercell USA, Inc.
Industry
Eligibility
18 Years to 64 Years
Enrollment
120 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2009
U.S. locations
3
States / cities
Vallejo, California • South Miami, Florida • San Antonio, Texas
Source: ClinicalTrials.gov public record
Updated Jan 28, 2020 · Synced Sep 27, 2026, 10:26 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Single-blind Study to Evaluate the Safety, Tolerability, and Immunogenicity of a Hantaan Puumala Virus DNA Vaccine

NCT02776761
View directory record Official record
Conditions
Hantaan Virus
Interventions
Hantaan Vaccine:, Puumala Vaccine, Hantaan/Puumala Vaccine
Biological
Lead sponsor
U.S. Army Medical Research and Development Command
Federal
Eligibility
18 Years to 49 Years
Enrollment
27 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2017
U.S. locations
1
States / cities
Silver Spring, Maryland
Source: ClinicalTrials.gov public record
Updated Feb 15, 2021 · Synced Sep 27, 2026, 10:26 PM 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 Sep 27, 2026, 10:26 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Safety of Sublingual dmLT for ETEC

NCT02052934
View directory record Official record
Conditions
Gastroenteritis Escherichia Coli
Interventions
Recombinant Double Mutant Heat-Labile Toxin LT(R192G/L211A) (dmLT) Oral enterotoxigenic Escherichia coli (ETEC) Vaccine
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 45 Years
Enrollment
80 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2016
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Jan 27, 2019 · Synced Sep 27, 2026, 10:26 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Phase I Study of ETEC Vaccine

NCT01147445
View directory record Official record
Conditions
Gastroenteritis Escherichia Coli
Interventions
Recombinant Double Mutant Heat-Labile Toxin LT(R192G/L211A) (dmLT) Oral enterotoxigenic Escherichia coli (ETEC) Vaccine
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 45 Years
Enrollment
36 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2012
U.S. locations
2
States / cities
Baltimore, Maryland • Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Oct 6, 2025 · Synced Sep 27, 2026, 10:26 PM EDT