Dose-Finding Study of WS6788A and LSN03-016011/A Enterotoxigenic E. Coli ETEC Challenge Strains That Express CS17
Public ClinicalTrials.gov record NCT00564577. 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
Dose-Finding Study of WS6788A and LSN03-016011/A Enterotoxigenic E. Coli (ETEC) Challenge Strains That Express CS17
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
This will be a strain and dose-finding study in which LSN03-016011/A ETEC will be administered at a starting inoculum of 5x108 cfu to 5 subjects to establish a human disease model. If 80% attack rate (AR) is achieved without high output diarrhea, the same inoculum will be given to 10 more subjects for confirmation of AR. If 80% AR is not achieved, attack rate and severity of disease will be evaluated to determine if the dose should be increased. The same sequence may be conducted with WS6788A if applicable. If the LSN strain causes high output diarrhea the dose will be adjusted down and further dose characterization continued. An iterative process will be used to select the optimal strain and dose with each step reviewed and approved by the medical monitor.
Study identification
- NCT ID
- NCT00564577
- Recruitment status
- Completed
- Study type
- Interventional
- Phase
- Phase 1
- Enrollment
- 13 participants
Conditions and interventions
Conditions
Eligibility (public fields only)
- Age range
- 15 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
- Aug 31, 2006
- Primary completion
- Jun 12, 2007
- Completion
- Jun 12, 2007
- Last update posted
- Apr 10, 2017
2006 – 2007
United States locations
- U.S. sites
- 2
- U.S. states
- 1
- U.S. cities
- 1
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| Center for Immunization Research - Johns Hopkins Bloomberg School of Public Health | Baltimore | Maryland | 21205 | — |
| General Clinical Research Center of the Johns Hopkins Hospital | Baltimore | Maryland | 21287 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT00564577, 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 Apr 10, 2017 · Synced Sep 9, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT00564577 live on ClinicalTrials.gov.