Safety and Immunogenicity of Two Doses of aH5N1 Vaccine in Adult and Elderly Subjects With and Without Underlying Medical Conditions

Phase III, Stratified, Randomized, Controlled, Observer-Blind, Multicenter Study to Evaluate the Safety, Tolerability, and Immunogenicity of Two Doses of aH5N1 When Administered to Adult and Elderly Subjects With and Without Underlying Medical Conditions.

Evaluate the safety, immune response and reactogenicity of aH5N1 vaccination in adult (18 through 60 years of age) and elderly (≥61 years of age) subjects with and without underlying medical conditions.

Inclusion Criteria:

• - Male and female individuals 18 years of age and older at the time of enrollment who are mentally competent, willing and able to understand the nature and risks of the proposed study, and able to sign the consent form prior to study entry;
• Individuals who are able to comply with all study procedures and requirements;
• Healthy volunteers and volunteers specifically with underlying COPD, cardiovascular disease, diabetes mellitus, peripheral vascular disease, or renal impairment may be eligible;
• Please contact the site for additional eligibility criteria.

Exclusion Criteria:

• Individuals who are not able to follow all the required study procedures for the whole period of the study;
• Individuals with behavioral or cognitive impairment or psychiatric disease that, in the opinion of the Investigator, may interfere with the subject's ability to participate in the study;
• Please contact the site for additional eligibility criteria.