# Th1 Response to Influenza: Aging and Vaccine Efficacy

> **NCT00396305** · PHASE4 · TERMINATED · sponsor: **National Institute of Allergy and Infectious Diseases (NIAID)** · enrollment: 41 (actual)

## Conditions studied

- Influenza

## Interventions

- **DRUG:** Placebo
- **BIOLOGICAL:** Trivalent Inactivated Influenza

## Key facts

- **NCT ID:** NCT00396305
- **Lead sponsor:** National Institute of Allergy and Infectious Diseases (NIAID)
- **Sponsor class:** NIH
- **Phase:** PHASE4
- **Study type:** INTERVENTIONAL
- **Status:** TERMINATED
- **Start date:** 2006-11
- **Primary completion:** 2007-09
- **Final completion:** 2008-01
- **Target enrollment:** 41 (ACTUAL)
- **Last updated:** 2010-08-27


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT00396305

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT00396305, "Th1 Response to Influenza: Aging and Vaccine Efficacy". Retrieved via AI Analytics 2026-06-05 from https://api.ai-analytics.org/clinical/NCT00396305. Licensed CC0.

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