# Effectiveness and Tolerability of Influenza Vaccine in Patients at Risk for Severe and Complicated Influenza

> **NCT06286488** · PHASE4 · UNKNOWN · sponsor: **Medical University of Warsaw** · enrollment: 1500 (actual)

## Conditions studied

- Influenza
- Obesity
- Pregnancy; Infection
- Elderly Infection
- Vaccine Reaction
- Vaccine Adverse Reaction
- Tolerance

## Interventions

- **DRUG:** Vaxigrip

## Key facts

- **NCT ID:** NCT06286488
- **Lead sponsor:** Medical University of Warsaw
- **Sponsor class:** OTHER
- **Phase:** PHASE4
- **Study type:** INTERVENTIONAL
- **Status:** UNKNOWN
- **Start date:** 2020-09-15
- **Primary completion:** 2023-08-23
- **Final completion:** 2026-05-01
- **Target enrollment:** 1500 (ACTUAL)
- **Last updated:** 2024-03-01


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT06286488

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT06286488, "Effectiveness and Tolerability of Influenza Vaccine in Patients at Risk for Severe and Complicated Influenza". Retrieved via AI Analytics 2026-06-09 from https://api.ai-analytics.org/clinical/NCT06286488. Licensed CC0.

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