Safety and Immunogenicity of a Commercially Available Influenza Vaccine (Formulation 2006/2007) When Administered to Subjects 18 Years of Age or Older

Inclusion Criteria: * Male and female subjects 18 years of age or older Exclusion Criteria: * any auto-immune disease or other serious acute, chronic or progressive disease * hypersensitivity to eggs, chicken protein, chicken feathers, influenza viral protein, neomycin or polymyxin or any other component of the vaccine * known or suspected (or high risk of developing) impairment/alteration of immune function * within the past 7 days any acute disease or infections requiring systemic antibiotic or antiviral therapy * history of neurological symptoms or signs, or anaphylactic shock following administration of any vaccine