Safety and Immunogenicity of Two Doses of H5N1 Influenza Vaccine in Adults Unprimed and Primed With Adjuvanted or Non-adjuvanted Influenza Vaccines

Two 0.5 mL doses of MF59-adjuvanted A/Vietnam/1194/2004 (H5N1 Clade 1) hemagglutinin (HA) subvirion influenza vaccine, containing 7.5 μg of H5N1 antigen,administered 3 weeks apart, IM in the deltoid muscle, preferably of the non-dominant arm.