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
Public ClinicalTrials.gov record NCT03548064. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Official title
A Phase 1 Double-Blinded, Placebo-Controlled, Dose Escalation Study to Evaluate the Safety and Immunogenicity of Double Mutant Heat-Labile Toxin LTR192G/L211A (dmLT) From Enterotoxigenic Escherichia Coli (ETEC) by Oral, Sublingual, or Intradermal Vaccination in Adults Residing in an Endemic Area
Study identification
- NCT ID
- NCT03548064
- Recruitment status
- Terminated
- Study type
- Interventional
- Phase
- Phase 1
- Lead sponsor
- National Institute of Allergy and Infectious Diseases (NIAID)
- NIH
- Enrollment
- 75 participants
Conditions and interventions
Conditions
Interventions
- Placebo Other
- Recombinant Double Mutant Heat-Labile Toxin LT(R192G/L211A) (dmLT) Oral enterotoxigenic Escherichia coli (ETEC) Vaccine Biological
Other · Biological
Eligibility (public fields only)
- Age range
- 18 Years to 45 Years
- Sex
- All
- Healthy volunteers
- Accepts healthy volunteers
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Mar 9, 2019
- Primary completion
- Dec 30, 2020
- Completion
- Dec 30, 2020
- Last update posted
- May 20, 2025
2019 – 2020
United States locations
- U.S. sites
- 1
- U.S. states
- 1
- U.S. cities
- 1
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| University of Maryland, School of Medicine, Center for Vaccine Development and Global Health | Baltimore | Maryland | 21201-1509 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
Non-U.S. locations
This page focuses on the U.S. directory. The official record also lists 1 non-U.S. site.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT03548064, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted May 20, 2025 · Synced May 17, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT03548064 live on ClinicalTrials.gov.