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NCT03581903 · ClinicalTrials.gov registry record · Phase 1
A Study in Healthy Adults to Assess Priming With Antigenically Mismatched Live Attenuated A/H7N3 Influenza Virus Vaccine Followed by Inactivated A/H7N9 Influenza Virus Vaccine
A Phase 1 study, sponsored by National Institute of Allergy and Infectious Diseases (NIAID).
- Completed
- Registry status
- Phase 1
- Development phase
- 20
- Enrollment target
NCT03581903: Completed Phase 1 study, sponsored by National Institute of Allergy and Infectious Diseases (NIAID).
NCT03581903 is a Phase 1 study that has completed, run by National Institute of Allergy and Infectious Diseases (NIAID). The registered enrollment target is 20 participants, below the 60-participant average among 29,502 other Phase 1 trials with a reported enrollment target (67% lower). According to ClinicalTrials.gov, the official US trial registry.
The verdict
NCT03581903, a Phase 1 study, has completed, sponsored by National Institute of Allergy and Infectious Diseases (NIAID).
- COMPLETED
- Registry status
- Phase 1
- Development phase
- 20 participants
- Enrollment target
Study Summary
The purpose of this study is to assess priming with antigenically mismatched live attenuated A/H7N3 influenza virus vaccine followed by inactivated A/H7N9 influenza virus vaccine in healthy adults.
Primary Outcome
Defined as 4-fold or greater response to a titer of 1:40 or above with 95% confidence intervals for both antigens
Interventions
- BIOLOGICAL H7N3 pLAIV
- BIOLOGICAL H7N9 pIIV
Trial Details
| Field | Value |
|---|---|
| Enrollment Target | 20 participants |
| Start Date | 2017-09-19 |
| Est. Completion | 2019-02-06 |
| Phase | Phase 1 |
What the finished NCT03581903 record still lists
NCT03581903 is an interventional study that assigns participants to a tested intervention. The registry caps enrollment at 20 participants, a relatively small participant target, below the 60-participant average among 29,502 other Phase 1 trials with a reported enrollment target (67% lower).
The record links to 0 conditions, and to 2 interventions - of which H7N3 pLAIV is the first listed.
NCT03581903 does not publish any study locations in the registry export this page uses.
Frequently Asked Questions
What is clinical trial NCT03581903 about?
NCT03581903 is a clinical study titled "A Study in Healthy Adults to Assess Priming With Antigenically Mismatched Live Attenuated A/H7N3 Influenza Virus Vaccine Followed by Inactivated A/H7N9 Influenza Virus Vaccine". The purpose of this study is to assess priming with antigenically mismatched live attenuated A/H7N3 influenza virus vaccine followed by inactivated A/H7N9 influenza virus vaccine in healthy adults.
What is the current status of trial NCT03581903?
This trial is currently completed. It is a Phase 1 study. The enrollment target is 20 participants. The study started on 2017-09-19. Estimated completion is 2019-02-06.
What interventions are being tested in trial NCT03581903?
The interventions under investigation include: H7N3 pLAIV (BIOLOGICAL), H7N9 pIIV (BIOLOGICAL).
Who is sponsoring clinical trial NCT03581903?
This trial is sponsored by National Institute of Allergy and Infectious Diseases (NIAID), which has 2,006 total clinical trials registered on ClinicalTrials.gov.
Learn More About Clinical Trials
How this trial's enrollment target compares
Where NCT03581903's enrollment target sits among peer trials
20 1629th of 2000 higher than 285 of 2,000 other Phase 1 trials
participants (enrollment target), bucketed by value
Each bar is a band; taller bars hold more other Phase 1 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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