title: The medical letter on drugs and therapeutics.
mesh_terms: D006801:Humans; D007114:Immunization; D009980:Influenza A virus / Q000276:immunology*; D007252:Influenza Vaccines / Q000627:therapeutic use*; D007251:Influenza, Human / Q000401:mortality / Q000517:prevention & control*; D009975:Orthomyxoviridae / Q000276:immunology*
chemical_list: D007252:Influenza Vaccines