Study to Determine a Preference for Fluzone Vaccine Given Intradermally (ID) and Intramuscularly (IM) in Healthy Adults

Inclusion Criteria: * Healthy male or female subject (can have underlying medical condition, as long as they are stable), greater than or equal to 18 to \< 50 years of age on the day of inclusion. * Informed consent form signed. * Able to attend both scheduled visits and to comply with all trial procedures. * For a woman of child-bearing potential, avoid becoming pregnant (use of an effective method of contraception or abstinence) for at least 4 weeks prior to vaccination, until at least 4 weeks after vaccination. Exclusion Criteria: * Subject currently breast-feeding. * Participation in another investigational clinical trial in the 4 weeks preceding and during the trial period. * Hypersensitivity to egg proteins, chicken proteins, or to any of the vaccine components, or history of a life-threatening reaction to the trial vaccine or a vaccine containing any of the same substances. * Thrombocytopenia or bleeding disorder contraindicating IM vaccination. * Any other condition which in the opinion of the Investigator would pose a health risk to the subject or interfere with the evaluation of the vaccine. * Personal history of Guillain-Barre syndrome. * Current use of alcohol or recreational drugs that in the opinion of the Investigator might interfere with the subject's ability to comply with trial procedures. * Febrile illness (oral temperature greater than or equal to 99.5 degrees F) on day of inclusion (temporary deferral). * Influenza vaccination received this season (2007-2008).