Influenza vaccination coverage rate among high-risk children during the 2002-2003 influenza season.
D000293:Adolescent; D000367:Age Factors; D002648:Child; D002675:Child, Preschool; D005843:Geography; D006801:Humans; D007223:Infant; D007252:Influenza Vaccines / Q000276:immunology*; D007251:Influenza, Human / Q000517:prevention & control*; D019458:Insurance Coverage; D014481:United States; D014611:Vaccination / Q000706:statistics & numerical data*
D007252:Influenza Vaccines