Influenza vaccination in schoolboys.
D000293:Adolescent; D000367:Age Factors; D002648:Child; D006801:Humans; D007252:Influenza Vaccines / Q000008:administration & dosage*; D007251:Influenza, Human / Q000517:prevention & control*; D008297:Male; D009975:Orthomyxoviridae / Q000302:isolation & purification; D014611:Vaccination
D007252:Influenza Vaccines