Vaccination against influenza.
D005260:Female; D006801:Humans; D007115:Immunization Schedule; D007252:Influenza Vaccines / Q000008:administration & dosage*; D007251:Influenza, Human / Q000276:immunology / Q000517:prevention & control*; D008297:Male; D014481:United States; D014611:Vaccination
D007252:Influenza Vaccines