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Clinical Trial Summary

The aim of the study is to demonstrate safety and immunogenicity of the quadrivalent influenza intradermal (QIV-ID) vaccine compared to the trivalent influenza vaccine (TIV) containing the B strain from the primary (Yamagata) lineage (TIV-ID1) and the trivalent influenza vaccine containing B strain from the alternate (Victoria) lineage (TIV-ID2) vaccines in producing protection against four strains of influenza virus.

Primary Objective:

- To demonstrate that QIV-ID induces an immune response (as assessed by hemagglutination inhibition (HAI) geometric mean titers (GMTs) and seroconversion rates) that is non-inferior to responses induced by TIV-ID1 and TIV-ID2 for the 4 virus strains at 28 days post-vaccination.

Secondary Objectives:

- To demonstrate that each B strain in QIV-ID induces an immune response (as assessed by HAI GMTs and seroconversion rates) that is superior to the response induced by the TIV-ID that does not contain the corresponding B strain.

- To describe the rate of post-vaccination seroprotection induced by QIV-ID and TIV-ID.

- To describe post-vaccination immunogenicity stratified by age (18-49 years and 50-64 years), race, ethnicity, gender, previous vaccination status, and baseline seropositivity status.

- To describe the safety profile for subjects who receive QIV-ID and TIV-ID.

Observational Objectives:

- To demonstrate non-inferiority of QIV-ID compared to TIV-ID in terms of all Grade 2 or Grade 3 solicited systemic reactions combined

- To demonstrate non-inferiority of QIV-ID compared to TIV-ID in terms of all Grade 3 solicited injection site reactions combined.


Clinical Trial Description

All participants will receive a single dose of their assigned vaccine on Day 0. A subset of the participants will be assessed for immunologic response on Day 0 before vaccination and Day 28 after vaccination. All subjects will be monitored for safety for up to 6 months after vaccination. ;


Study Design

Allocation: Randomized, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Caregiver, Investigator, Outcomes Assessor), Primary Purpose: Prevention


Related Conditions & MeSH terms


NCT number NCT01712984
Study type Interventional
Source Sanofi
Contact
Status Completed
Phase Phase 3
Start date October 2012
Completion date October 2013

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