# Intradermal Influenza Vaccine With Topical Imiquimod in Elderly and Chronic Illness Patients

> **NCT04143451** · PHASE3 · UNKNOWN · sponsor: **The University of Hong Kong** · enrollment: 4000 (estimated)

## Conditions studied

- Influenza

## Interventions

- **BIOLOGICAL:** Vaxigrip tetra
- **BIOLOGICAL:** Fluzone high-dose
- **DRUG:** Aldara 5% Topical Cream
- **DRUG:** Aqueous cream BP

## Key facts

- **NCT ID:** NCT04143451
- **Lead sponsor:** The University of Hong Kong
- **Sponsor class:** OTHER
- **Phase:** PHASE3
- **Study type:** INTERVENTIONAL
- **Status:** UNKNOWN
- **Start date:** 2019-10-23
- **Primary completion:** 2022-09-30
- **Final completion:** 2023-03-31
- **Target enrollment:** 4000 (ESTIMATED)
- **Last updated:** 2021-04-28


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04143451

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04143451, "Intradermal Influenza Vaccine With Topical Imiquimod in Elderly and Chronic Illness Patients". Retrieved via AI Analytics 2026-06-02 from https://api.ai-analytics.org/clinical/NCT04143451. Licensed CC0.

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