title: Leads from the MMWR. Update on influenza activity worldwide and World Health Organization and United States recommendations for influenza vaccine composition for the 1987-1988 season.
mesh_terms: D000956:Antigens, Viral / Q000032:analysis; D004196:Disease Outbreaks / Q000517:prevention & control*; D006801:Humans; D009980:Influenza A virus / Q000276:immunology; D007252:Influenza Vaccines; D007251:Influenza, Human / Q000453:epidemiology* / Q000517:prevention & control; D014481:United States; D014944:World Health Organization
chemical_list: D000956:Antigens, Viral; D007252:Influenza Vaccines