title: Safety and immunogenicity of a 45-microgram supplemental dose of inactivated split-virus influenza B vaccine in the elderly.
mesh_terms: D000368:Aged; D000914:Antibodies, Viral / Q000096:biosynthesis*; D006801:Humans; D009981:Influenza B virus / Q000276:immunology*; D007252:Influenza Vaccines / Q000009:adverse effects / Q000276:immunology*; D008875:Middle Aged; D014613:Vaccines, Attenuated / Q000276:immunology
chemical_list: D000914:Antibodies, Viral; D007252:Influenza Vaccines; D014613:Vaccines, Attenuated