Status:

UNKNOWN

Influenza Vaccine With Topical Imiquimod in Influenza Vaccine Non-responsive Children

Lead Sponsor:

The University of Hong Kong

Conditions:

Influenza

Eligibility:

All Genders

8-18 years

Phase:

NA

Brief Summary

Aims and hypotheses to be tested: Primary objective \- To compare the IIV responses, in terms of seroconversion rates, using ID IIV with topical 5% imiquimod (IIV-Q-ID), ID influenza vaccine alone (...

Detailed Description

This study is a cross-over randomized-controlled trial (RCT). The outline of the study is shown in Figure 1. This study is divided into two parts: (i) screening for vaccine non-responders; and (ii) RC...

Eligibility Criteria

Inclusion

  • Age 8-18 years old
  • Subjects receiving IIV influenza vaccination through the Seasonal Influenza Vaccination School Outreach Programme.

Exclusion

  • Age \<8 years old to avoid the need for second dose vaccine in case the subjects have never had influenza vaccines before
  • Age \>18 years old
  • Received any forms of influenza vaccines, including the intranasal live-attenuated influenza vaccines or inactivated vaccines, in the past six months
  • Underlying chronic illnesses, including immunodeficiencies or autoimmune diseases
  • Using immunosuppressive reagents, such as long-term corticosteroids, and other steroid-sparing reagents 6 months prior to the recruitment
  • Received intravenous immunoglobulin or other blood products 3 months prior to the recruitment
  • Had upper respiratory tract infection symptoms within two weeks before the vaccination, including fever, cough, sore throat, and coryza
  • Previous allergic reactions to imiquimod, influenza vaccines, and their excipients.

Key Trial Info

Start Date :

April 30 2022

Trial Type :

INTERVENTIONAL

Allocation :

ESTIMATED

End Date :

October 30 2023

Estimated Enrollment :

72 Patients enrolled

Trial Details

Trial ID

NCT05315024

Start Date

April 30 2022

End Date

October 30 2023

Last Update

April 18 2022

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