Immune Response Analysis to Influenza Vaccine in Elderly Aged Over 65 Years (Expand IDWP21)

The recruitment status of this study is unknown because the information has not been verified recently.
Verified December 2011 by Hospices Civils de Lyon.
Recruitment status was  Recruiting
Information provided by (Responsible Party):
Hospices Civils de Lyon Identifier:
First received: February 2, 2011
Last updated: December 29, 2011
Last verified: December 2011

This study is the first step in a clinical research program that aims to study the immune response to influenza vaccine in the elderly and then to propose a new method of administering the vaccine.

Influenza can cause severe complications in patients at risk (elderly and subjects vulnerable because of a chronic underlying disease). Over 90% of deaths related to influenza occur in people aged over 65 years.

Vaccination is the most effective way to prevent infection. The World Health Organization recommends annual immunization for people at risk, including all persons aged over 65 years, to reduce the risk of morbidity and mortality related to influenza.

However, the immune response to influenza vaccine appears to be lower in elderly than in young people.

Condition Intervention Phase
Immune Response
Procedure: Blood sample
Phase 4

Study Type: Interventional
Study Design: Endpoint Classification: Efficacy Study
Intervention Model: Single Group Assignment
Masking: Open Label
Primary Purpose: Prevention
Official Title: Immune Response Analysis to Influenza Vaccine in Elderly Aged Over 65 Years

Resource links provided by NLM:

Further study details as provided by Hospices Civils de Lyon:

Primary Outcome Measures:
  • antibody rates after influenza vaccination [ Time Frame: up to 3 months after vaccination ] [ Designated as safety issue: No ]

Estimated Enrollment: 750
Study Start Date: November 2010
Estimated Study Completion Date: April 2012
Estimated Primary Completion Date: April 2012 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: antibody rates Procedure: Blood sample
Blood sample of 7 ml


Ages Eligible for Study:   65 Years and older
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:

  • Subject aged 65 years or over
  • Influenza vaccination without adjuvant, within 3 weeks and 3 months before inclusion visit
  • Legal capacity to consent
  • Subject had given written consent before his participation

Exclusion Criteria:

  • Adjuvanted influenza vaccine (e.g: Fluad, Gripguard)
  • Live vaccines within 3 weeks before and after influenza vaccination
  • Inactivated vaccines within 2 weeks before and after influenza vaccination
  • Chronic disease non-stabilized under treatment
  • Severe malnutrition in the opinion of the investigator
  • Congenital immunodeficiency
  • Chemotherapy or radiotherapy over the last 6 months
  • Immunosuppressive therapy or corticosteroid (daily dose of prednisone or equivalent >/= 20 mg/d over 14 days) from 1 month before vaccination until the study visit
  • Participation in another clinical study that could interfere with the present study
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT01289535

Contact: Catherine GOUJON, Dr +33 478 86 41 25

Unité de Recherche Clinique en Immunologie Lyon Sud (URCI-LS) et Service d'Immunologie clinique et allergologie Recruiting
Pierre-Bénite, France, 69495
Contact: Catherine GOUJON, Dr    +33 478 86 41 25   
Principal Investigator: Catherine GOUJON, Dr         
Sponsors and Collaborators
Hospices Civils de Lyon
  More Information

Responsible Party: Hospices Civils de Lyon Identifier: NCT01289535     History of Changes
Other Study ID Numbers: 2010.621 
Study First Received: February 2, 2011
Last Updated: December 29, 2011
Health Authority: France: Afssaps - Agence française de sécurité sanitaire des produits de santé (Saint-Denis)

Keywords provided by Hospices Civils de Lyon:
Influenza vaccine
immune response
elderly processed this record on May 24, 2016