# Effectiveness of Flu Vaccination and Burden of Illness Among Community-dwelling Elderly With Influenza Like Illness in Brazil

> **NCT01171157** · — · TERMINATED · sponsor: **GlaxoSmithKline** · enrollment: 4 (actual)

## Conditions studied

- Influenza

## Interventions

- **OTHER:** Routine sample collection

## Key facts

- **NCT ID:** NCT01171157
- **Lead sponsor:** GlaxoSmithKline
- **Sponsor class:** INDUSTRY
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** TERMINATED
- **Start date:** 2009-05-26
- **Primary completion:** 2009-06-01
- **Final completion:** 2009-06-29
- **Target enrollment:** 4 (ACTUAL)
- **Why stopped:** In the context of the World Health Organization's (WHO) Phase 6 pandemic influenza declaration the conduct of the study was deemed no longer feasible
- **Last updated:** 2018-06-01


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT01171157

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT01171157, "Effectiveness of Flu Vaccination and Burden of Illness Among Community-dwelling Elderly With Influenza Like Illness in Brazil". Retrieved via AI Analytics 2026-06-09 from https://api.ai-analytics.org/clinical/NCT01171157. Licensed CC0.

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