title: Update on influenza activity--United States and worldwide, with recommendations for influenza vaccine composition for the 1988-89 season.
mesh_terms: D000956:Antigens, Viral; D014943:Global Health; D006801:Humans; D009980:Influenza A virus / Q000276:immunology / Q000302:isolation & purification*; D009981:Influenza B virus / Q000276:immunology / Q000302:isolation & purification*; D007252:Influenza Vaccines; D007251:Influenza, Human / Q000453:epidemiology*; D014481:United States
chemical_list: D000956:Antigens, Viral; D007252:Influenza Vaccines