# Immune Response Analysis to Influenza Vaccine in Elderly Aged Over 65 Years

> **NCT01289535** · PHASE4 · UNKNOWN · sponsor: **Hospices Civils de Lyon** · enrollment: 750 (estimated)

## Conditions studied

- Immune Response

## Interventions

- **PROCEDURE:** Blood sample

## Key facts

- **NCT ID:** NCT01289535
- **Lead sponsor:** Hospices Civils de Lyon
- **Sponsor class:** OTHER
- **Phase:** PHASE4
- **Study type:** INTERVENTIONAL
- **Status:** UNKNOWN
- **Start date:** 2010-11
- **Primary completion:** 2012-04
- **Final completion:** 2012-04
- **Target enrollment:** 750 (ESTIMATED)
- **Last updated:** 2011-12-30


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT01289535

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT01289535, "Immune Response Analysis to Influenza Vaccine in Elderly Aged Over 65 Years". Retrieved via AI Analytics 2026-05-27 from https://api.ai-analytics.org/clinical/NCT01289535. Licensed CC0.

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