A Study of the Safety, Tolerability & Immunogenicity of CSL Limited's Influenza Virus Vaccine In a Paediatric Population

Inclusion Criteria: 1. Be healthy male or female children, aged = or \> 6 months to \< 9 years at the time of first study vaccination; Note: = or \> 6 refers to 6 calendar months 2. Parent(s) or Guardian(s) to provide written informed consent to participate in the study; 3. Be able to provide a pre-vaccination sample of up to 5mL of venous blood without undue distress/discomfort and 4. Be born after a normal gestation period (between 36 and 42 weeks). Exclusion Criteria: 1. Known allergy to eggs, chicken feathers, neomycin, polymyxin, or any components of the vaccine; 2. Previous influenza vaccination; 3. Clinical signs of active infection and/or an axillary temperature of = or \>37.5 degrees Celsius or oral temperature of = or \>38 degrees Celsius at study entry. Study entry may be deferred for such individuals, at the discretion of the Principal Investigator; 4. Confirmed or suspected immunosuppressive condition (including cancer), or a previously diagnosed (congenital or acquired) immunodeficiency disorder (including HIV); 5. Current (or within the 90 days prior to receiving the Study Vaccine) treatment with immunosuppressive or immunomodulative medication, including systemic corticosteroids, as follows: •Chronic or long term corticosteroids: \>0.5mg/kg/day of oral prednisolone or equivalent (Note: Use of topical or inhalant corticosteroids prior to administration of the Study Vaccine or throughout the Study is acceptable). 6. Administration of immunoglobulins and/or any blood products since birth or planned administration of such blood products during the study period; 7. Participation in a clinical study or use of an investigational compound (ie a new chemical or biological entity not registered for clinical use), within the 90 days prior to receiving the Study Vaccine or be planning to enter such a study during the study period; 8. Current treatment with cytotoxic drugs or treatment within the 6 months prior to administration of the Study Vaccine; 9. Have a known history of Guillain-Barré Syndrome; 10. Have a major congenital defect or serious illness and 11. Have a history of neurologic disorders or seizures