Study to Evaluate Reactogenicity and Immunogenicity of Revaccination With Adjuvanted Influenza Vaccine in Elderly Adults
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Since influenza vaccines are normally administered every year because of the frequent change in their antigenic composition, the safety and immunogenicity profiles of the adjuvanted influenza vaccine need to be re-evaluated after repeated vaccine administration. In this study, subjects enrolled in a previous study will receive a booster dose with the 2006-2007 season's formulations of Fluarix or the adjuvanted vaccine.
Evaluate Reactogenicity & Immunogenicity of Adjuvanted Influenza Vaccine in Elderly Adults Previously Vaccinated With the Same Candidate Vaccine. Fluarix™ Administered in Young & Elderly Adults Will be Used as Reference
Study Start Date
Study Completion Date
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Ages Eligible for Study:
18 Years to 65 Years (Adult)
Sexes Eligible for Study:
Accepts Healthy Volunteers:
The subjects must be healthy adults ages 18-40 years or >/= 65 years previously vaccinated with either Fluarix or the adjuvanted vaccine.
Subjects will be excluded if they take/have taken chronically high doses of immunosuppressants or other immune modifying drugs within six months before vaccination, or immunoglobulins or blood products within three months before vaccination, or any investigational product within 30 days before vaccination
Have a history of influenza infection since previous vaccination
Women who are pregnant
Subjects who have an acute or chronic clinically significant disease or an immunosuppressive/deficient condition, or have contra-indications to influenza vaccination