title: Recommended composition of influenza virus vaccines for use in the 1991-1992 season.
mesh_terms: D000956:Antigens, Viral / Q000032:analysis; D004196:Disease Outbreaks; D006801:Humans; D009980:Influenza A virus / Q000276:immunology*; D009981:Influenza B virus / Q000276:immunology*; D007252:Influenza Vaccines / Q000592:standards*; D007251:Influenza, Human / Q000453:epidemiology
chemical_list: D000956:Antigens, Viral; D007252:Influenza Vaccines