Safety and Immunogenicity of Two Doses of H5N1 Influenza Vaccine in Elderly Subjects

Inclusion Criteria:

1. Healthy elderly subjects ≥65 years,

2. Individuals willing to provide written informed consent,

3. Individuals in good health,

4. Individuals willing to allow for their serum samples to be stored beyond the study
period.

Exclusion Criteria:

1. Individuals not able to understand and follow study procedures,

2. History of any significant illness,

3. History of any serious chronic medical condition or progressive disease,

4. Presence of medically significant cancer,

5. Known or suspected impairment/alteration of immune function,

6. Presence of any progressive or severe neurologic disorder,

7. Presence of any bleeding disorders or conditions that prolongs bleeding time,

8. History of allergy to vaccine components,

9. Receipt of any other investigational product within 30 days prior to entry into the
study,

10. History of previous H5N1 vaccination,

11. Receipt of any other type of seasonal vaccination within 2 months prior to entry into
the study,

12. Receipt of any other vaccine within 2 weeks prior to entry into the study

13. Body temperature ≥38°C.0 (≥100.4° F) and/or acute illness within 3 days of intended
study vaccination,

14. Body mass index (BMI) ≥ 35 kg/m2,

15. History of drug or alcohol abuse,

16. Any planned surgery during study period,

17. Individuals conducting the study and their immediate family members,

18. Individuals with behavioral or cognitive impairment or psychiatric diseases.