Influenza vaccination policy.
D000293:Adolescent; D002648:Child; D004739:England; D006801:Humans; D007115:Immunization Schedule; D007252:Influenza Vaccines / Q000627:therapeutic use*; D007251:Influenza, Human / Q000517:prevention & control*; D008297:Male; D013997:Time Factors
D007252:Influenza Vaccines