Study to Evaluate Reactogenicity and Immunogenicity of Revaccination With Adjuvanted Influenza Vaccine in Elderly

Inclusion Criteria: * The subjects must be healthy elderly \>/= 67 years and previously vaccinated with Fluarix or the adjuvanted vaccine. Exclusion Criteria: * Subjects will be excluded if they take/have taken chronically high doses of immunosuppressants or other immunemodifying 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, or if subjects have acute or chronic clinically significant disease or an immunosuppressive/deficient condition, or have contra-indications to influenza vaccination