Influenza immunization policies and practices in Japan.
D000293:Adolescent; D002648:Child; D006801:Humans; D007114:Immunization; D007252:Influenza Vaccines / Q000592:standards / Q000600:supply & distribution / Q000627:therapeutic use*; D007251:Influenza, Human / Q000517:prevention & control*; D007564:Japan
D007252:Influenza Vaccines