Study to Evaluate Reactogenicity and Immunogenicity of Revaccination With Adjuvanted Influenza Vaccine in Elderly
Since influenza vaccines are normally administered every year because of the frequent change in their antigenic composition, the safety and immunogenicity profile of adjuvanted influenza vaccine need to be re-evaluated after repeated vaccine administration. In this study, subjects previously vaccinated with Fluarix or the influenza adjuvanted vaccine, will receive a booster dose with the 2006-2007 season's formulations of either Fluarix or the adjuvanted vaccine.
|Study Design:||Allocation: Non-Randomized
Endpoint Classification: Safety/Efficacy Study
Intervention Model: Parallel Assignment
Masking: Open Label
Primary Purpose: Prevention
|Official Title:||A Phase II, Open, Controlled Study to Evaluate the Reactogenicity and the Immunogenicity of GlaxoSmithKline Biologicals Adjuvanted Influenza Vaccine in Elderly Adults Previously Vaccinated With Either Fluarix™ or the Adjuvanted Vaccine.|
- Evaluation of the safety and reactogenicity of repeated vaccination with adjuvanted influenza vaccine, during 21 days following administration of the vaccine.
- Evaluation of the humoral immune response & cell-mediated immune response 21 days after revaccination with candidate vaccine.
|Study Start Date:||October 2006|
Biological: Fluarix and adjuvanted influenza vaccine