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NCT00538512 · ClinicalTrials.gov registry record · Phase 4
Comparative Study of Influenza Vaccines in Adults, FLUVACS-year 4
A Phase 4 study, sponsored by University of Michigan.
- Completed
- Registry status
- Phase 4
- Development phase
- 1,952
- Enrollment target
NCT00538512: Completed Phase 4 study, sponsored by University of Michigan.
NCT00538512 is a Phase 4 study that has completed, run by University of Michigan. The registered enrollment target is 1,952 participants, above the 518-participant average among 9,235 other Phase 4 trials with a reported enrollment target (277% higher). According to ClinicalTrials.gov, the official US trial registry.
The verdict
NCT00538512, a Phase 4 study, has completed, sponsored by University of Michigan.
- COMPLETED
- Registry status
- Phase 4
- Development phase
- 1,952 participants
- Enrollment target
Study Summary
The purpose of this study is to evaluate the absolute (versus placebo) and relative (one vaccine compared to the other) efficacies of the live attenuated and inactivated influenza vaccines in preventing laboratory confirmed symptomatic influenza caused by circulating strains whether similar or dissimilar to strains included in the vaccines.
Interventions
- BIOLOGICAL Fluzone
- OTHER Physiologic saline
- BIOLOGICAL Flumist
Trial Details
| Field | Value |
|---|---|
| Enrollment Target | 1,952 participants |
| Start Date | 2007-09 |
| Est. Completion | 2008-05 |
| Phase | Phase 4 |
What the finished NCT00538512 record still lists
NCT00538512 is an interventional study that assigns participants to a tested intervention. Its 1,952 participants enrollment target places it among the larger protocols in the corpus, above the 518-participant average among 9,235 other Phase 4 trials with a reported enrollment target (277% higher).
The record links to 0 conditions, and to 3 interventions - of which Fluzone is the first listed.
NCT00538512 does not publish any study locations in the registry export this page uses.
Frequently Asked Questions
What is clinical trial NCT00538512 about?
NCT00538512 is a clinical study titled "Comparative Study of Influenza Vaccines in Adults, FLUVACS-year 4". The purpose of this study is to evaluate the absolute (versus placebo) and relative (one vaccine compared to the other) efficacies of the live attenuated and inactivated influenza vaccines in preventing laboratory confirmed symptomatic influenza caused by circulating strains whether similar or dissi...
What is the current status of trial NCT00538512?
This trial is currently completed. It is a Phase 4 study. The enrollment target is 1,952 participants. The study started on 2007-09. Estimated completion is 2008-05.
What interventions are being tested in trial NCT00538512?
The interventions under investigation include: Fluzone (BIOLOGICAL), Physiologic saline (OTHER), Flumist (BIOLOGICAL).
Who is sponsoring clinical trial NCT00538512?
This trial is sponsored by University of Michigan, which has 1,327 total clinical trials registered on ClinicalTrials.gov.
Learn More About Clinical Trials
How this trial's enrollment target compares
Where NCT00538512's enrollment target sits among peer trials
1,952 44th of 2000 higher than 1,957 of 2,000 other Phase 4 trials
participants (enrollment target), bucketed by value
Each bar is a band; taller bars hold more other Phase 4 trials. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source ClinicalTrials.gov registry export · 2026-08-08
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