Study of Inactivated, Split-Virion Influenza Vaccine Compared With Standard Fluzone Vaccine in Infants and Children

Inclusion criteria

• Aged 6 months to 8 years but not yet 9 years on the day of inclusion.
• Subject is healthy, as determined by medical history.
• Institution Review Board (IRB)-approved informed assent form signed by eligible subject (if required by local regulations) and/or an IRB-approved informed consent form signed by the subject's parent(s) or legal representative (and by an independent witness if required by local regulations).
• Parent or legal guardian willing and able to attend (bring subject) to all scheduled visits and comply with all trial procedures.

Exclusion criteria

• Participation in another clinical trial in the 4 weeks preceding the trial vaccination.
• Planned participation in another clinical trial during the present trial period.
• Personal or family history of Guillain-Barré Syndrome.
• Congenital or acquired immunodeficiency, immunosuppressive therapy such as anti-cancer chemotherapy or radiation therapy within the preceding 6 months, or long-term systemic corticosteroid therapy injected or oral corticosteroids or other immunomodulator therapy within six weeks of the study vaccine. Individuals on a tapering dose schedule of oral steroids lasting < 7 days may be included in the trial as long as they have not received more than one course within the last two weeks prior to enrollment.
• Systemic hypersensitivity to eggs, chicken proteins, or any of the vaccine components, or a vaccine containing the same substances.
• Chronic illness at a stage that could interfere with trial conduct or completion
• Received blood or blood-derived products in the previous 3 months.
• Any vaccination in the 4 weeks preceding or following the trial vaccinations (Subjects can take standard childhood vaccination(s) following Visit 3 blood draw).
• Known current human immunodeficiency virus (HIV), hepatitis B (HBsAg) or hepatitis C infection or seropositivity.
• Known thrombocytopenia or bleeding disorder contraindicating IM vaccination.
• Acute medical illness, with or without fever, within the last 72 hours or an oral temperature ≥ 37.5 °C (99.5 °F) or rectal temperature of ≥ 38°C (100.4 °F) at the time of enrollment.
• History of seizures.
• Received antibiotics therapy within 72 hours preceding the trial vaccination.
• Received any allergy shots in the 7-day period preceding trial vaccination and/or scheduled to receive any allergy shots in the 7-day period after trial vaccination.
• Any condition, which in the opinion of the investigator would pose a health risk to the participant.