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Completed Phase 3 Interventional Accepts healthy volunteers Results available

Phase 3 Safety and Immunogenicity Study of aQIV in Elderly Adults

ClinicalTrials.gov ID: NCT03314662

Public ClinicalTrials.gov record NCT03314662. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.

ClinicalTrials.gov public records Last synced Oct 21, 2026, 1:28 PM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Official title

A Phase 3, Randomized, Double-Blind, Controlled, Multicenter, Clinical Study to Evaluate Safety and Immunogenicity of an MF59-Adjuvanted Quadrivalent Subunit Influenza Vaccine in Comparison With an MF59-Adjuvanted Trivalent Subunit Influenza Vaccine and an MF59-Adjuvanted Trivalent Subunit Influenza Vaccine Containing the Alternate B Strain, in Adults Aged 65 Years and Above

Brief summary

Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.

This phase 3 study is a randomized, double-blinded, comparator controlled, parallel-group, multicenter study of aQIV versus the US-licensed 2017-2018 adjuvanted trivalent influenza vaccine (aTIV-1, Fluad), and versus an adjuvanted trivalent influenza vaccine (aTIV-2), containing the alternate B strain.

Study identification

NCT ID
NCT03314662
Recruitment status
Completed
Study type
Interventional
Phase
Phase 3
Lead sponsor
Seqirus
Industry
Enrollment
1,778 participants

Conditions and interventions

Eligibility (public fields only)

Age range
65 Years and older
Sex
All
Healthy volunteers
Accepts healthy volunteers

This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.

Study timeline

Start date
Oct 17, 2017 (Actual)
Primary completion
Dec 11, 2017 (Actual)
Completion
May 17, 2018 (Actual)
Last update posted
Jul 22, 2020

2017 – 2018

United States locations

U.S. sites
20
U.S. states
14
U.S. cities
20
Facility City State ZIP Site status
Coastal Clinical Research, Inc. Mobile Alabama 36608 —
Anaheim Clinical Trials Anaheim California 92801 —
Paradigm clinical Research Centers, Inc Redding California 96001 —
Clinical Research of South Florida, an AMR Company Coral Gables Florida 33134 —
Meridan Clinical Research, LLC Savannah Georgia 31406 —
Advanced Clinical Research Meridian Idaho 83642 —
Johnson County Clin-Trials Lenexa Kansas 66219 —
Heartland Research Associates, LLC - An AMR Company Newton Kansas 67114 —
Heartland Research Associates, LLC - An AMR Company Wichita Kansas 67207 —
Center for Pharmaceutical Research, LLC Kansas City Missouri 64114 —
Sundance Clinical Research, LLC St Louis Missouri 63141 —
Meridian Clinical Research, LLC Omaha Nebraska 68134 —
United Medical Associates Binghamton New York 13901 —
Rapid Medical Research, Inc. Cleveland Ohio 44122 —
Medical Research South Charleston South Carolina 29407 —
New Orleans Center for Clinical Research Knoxville Tennessee 37920 —
Benchmark Research Fort Worth Texas 76135 —
Benchmark Research San Angelo Texas 76904 —
Martin Diagnostic Clinic Tomball Texas 77375 —
Advanced Clinical Research West Jordan Utah 84088 —

Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.

About this trial record page

What this page shows
Public field values for ClinicalTrials.gov record NCT03314662, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
What this page does not do
No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
Where the data comes from
Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
Last refresh
Last update posted Jul 22, 2020 · Synced Oct 21, 2026

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Open the official record

The complete public registry record, listed eligibility criteria, and available contact information for NCT03314662 live on ClinicalTrials.gov.

View official ClinicalTrials.gov record →