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NCT04533139 · ClinicalTrials.gov registry record
Influenza Vaccine in Lung Transplant Patients - Antibody
A clinical trial of Influenza, sponsored by University of Wisconsin, Madison.
- Completed
- Registry status
- 122
- Enrollment target
- 1
- Study location
NCT04533139: Completed study of Influenza, sponsored by University of Wisconsin, Madison.
NCT04533139 is a study of Influenza that has completed, run by University of Wisconsin, Madison. The registered enrollment target is 122 participants, below the 36,803-participant average among 156 other Influenza trials with a reported enrollment target (100% lower). The trial reports 1 study location across 1 state. According to ClinicalTrials.gov, the official US trial registry.
The verdict
NCT04533139, a study of Influenza, has completed, sponsored by University of Wisconsin, Madison.
- COMPLETED
- Registry status
- 122 participants
- Enrollment target
- 1
- Study location
Study Summary
This is a sub-study of a 5-year study designed to investigate how antibody and T cell responses following influenza vaccine compare among lung transplant patients, patients waiting for lung transplantation, and healthy individuals. This prospective, parallel study was done to investigate the responses to influenza vaccine in consecutive years.
Primary Outcome
Influenza antibody concentrations are measured by HIA in samples taken before immunization and 2 to 4 weeks later. Antibody response is the difference in serum concentrations from before and 2 to 4 weeks after vaccination. Antibody concentrations were compared between seasons by using a Wilcoxon rank sum test.
Conditions Studied
Interventions
- DRUG Influenza vaccine
Study Locations (1)
Wisconsin
- University of Wisconsin - Madison
Trial Details
| Field | Value |
|---|---|
| Enrollment Target | 122 participants |
| Start Date | 2004-12 |
| Est. Completion | 2009-07 |
What the finished NCT04533139 record still lists
NCT04533139 is an observational study that tracks outcomes without assigning an intervention. The registered 122 participants enrollment target is mid-sized for trials with a published cap, below the 36,803-participant average among 156 other Influenza trials with a reported enrollment target (100% lower).
The record links to 1 condition, with Influenza appearing as the primary indexed condition, and to 1 intervention - of which Influenza vaccine is the first listed.
NCT04533139 reports a single indexed study location in Wisconsin.
Frequently Asked Questions
What is clinical trial NCT04533139 about?
NCT04533139 is a clinical study titled "Influenza Vaccine in Lung Transplant Patients - Antibody". This is a sub-study of a 5-year study designed to investigate how antibody and T cell responses following influenza vaccine compare among lung transplant patients, patients waiting for lung transplantation, and healthy individuals. This prospective, parallel study was done to investigate the respon...
What is the current status of trial NCT04533139?
This trial is currently completed. The enrollment target is 122 participants. The study started on 2004-12. Estimated completion is 2009-07.
What conditions does trial NCT04533139 study?
This clinical trial studies the following conditions: Influenza.
What interventions are being tested in trial NCT04533139?
The interventions under investigation include: Influenza vaccine (DRUG).
Who is sponsoring clinical trial NCT04533139?
This trial is sponsored by University of Wisconsin, Madison, which has 1,039 total clinical trials registered on ClinicalTrials.gov.
Where is trial NCT04533139 being conducted?
This trial has 1 study location across Wisconsin. Contact the study sites directly through ClinicalTrials.gov for enrollment availability.
Learn More About Clinical Trials
Similar trials for Influenza
Matched on the same primary condition, ranked to surface studies in the same phase first, then by recruiting status, no relevance scoring or editorial curation.
Where NCT04533139's enrollment target sits among peer trials
122 98th of 156 higher than 59 of 156 other Influenza trials
participants (enrollment target), bucketed by value
Each bar is a band; taller bars hold more other Influenza 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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