# Health Sciences North Research Institute: Phase 4 study completed, 393 enrolled (Elderly Immune System)

**Score:** 40/100

| Field | Value |
|---|---|
| Sponsor | Health Sciences North Research Institute |
| Sponsor type | Academic and hospital |
| Study | Immune Response to High-Dose vs. Standard Dose Influenza Vaccine |
| NCT ID | NCT02297542 |
| Phase | Phase 4 |
| Status | completed |
| Conditions | Elderly Immune System |
| Intervention types | biological |
| Target enrollment | 393 |
| Site countries | United States, Canada |
| Posted | 2014-11-21 |
| Planned start | 2014-02-01 |
| Event | Completed |
| Event date | 2026-09-21 |
| Last update posted | 2026-10-05 |

## Why this score
- Completed: closeout, analysis and the next study ahead.
- 393 participants planned.

Source: ClinicalTrials.gov (U.S. National Library of Medicine) API v2 (https://clinicaltrials.gov/study/NCT02297542). Last refreshed: 2026-11-04T06:04:38.232Z.
From public ClinicalTrials.gov registrations. Sponsor and study level only: we never list investigators, contacts or participants. A registration describes a planned study and can change. Status changes are read from each study's current status, actual dates and latest posted update, not a full change history, so an update can be a correction rather than a new change. Verify on ClinicalTrials.gov.