Completed PHASE4 INTERVENTIONAL 2-arm NCT00735475

A Study to Determine the Immunogenicity and Safety Profile of CSL Limited's Influenza Virus Vaccine Compared to a US Licensed Comparator Influenza Virus Vaccine

A Phase IV, Randomized, Observer-Blind, Multi-Center, Non Inferiority Comparison of the Immune Response of CSL Limited's Influenza Virus Vaccine Compared to a US Licensed Inactivated Split-Virion Influenza Vaccine in Adults Aged Greater Than or Equal to 65 Years

Sponsor: Seqirus

Conditions Influenza

Interventions CSL Limited Influenza Virus Vaccine (Afluria®) US Licensed Influenza Virus Vaccine (Fluzone®)

Updated 8 times since 2017 Last updated: Apr 25, 2018 Started: Oct 31, 2008 Primary completion: Jan 31, 2009 Completion: Jun 30, 2009

This information is for research purposes only and is not medical advice. Consult a healthcare provider before making any medical decision.

A PHASE4 clinical study on Influenza, this trial is completed. The trial is conducted by Seqirus and has accumulated 8 data snapshots since 2008. Infectious disease trials contribute critical data for public health response and treatment development.

Status Flow

Change History

8 versions recorded

Sep 2025 — Present [monthly]

Completed PHASE4
Sep 2024 — Sep 2025 [monthly]

Completed PHASE4
Jul 2024 — Sep 2024 [monthly]

Completed PHASE4
Jan 2021 — Jul 2024 [monthly]

Completed PHASE4
Jun 2018 — Jan 2021 [monthly]

Completed PHASE4

▶ Show 3 earlier versions

Dec 2017 — Jun 2018 [monthly]

Completed PHASE4
Feb 2017 — Dec 2017 [monthly]

Completed PHASE4
Jan 2017 — Feb 2017 [monthly]

Completed PHASE4

First recorded

Oct 2008

Trial started

Per CT.gov start date — pre-dates our first snapshot

Eligibility Summary

No eligibility information available.

Contact Information

Sponsor contact:

Seqirus

Data source: Seqirus

For direct contact, visit the study record on ClinicalTrials.gov .

Study Locations

Austin, United States , Bardstown, United States , Boise, United States , Cincinnati, United States , Durham, United States , Iowa City, United States , Johnston, United States , Mountain Home, United States , Nashville, United States , Pittsburgh, United States and 3 more locations