Gearing up to prevent a flu epidemic.
D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D004196:Disease Outbreaks / Q000517:prevention & control*; D006801:Humans; D009980:Influenza A virus; D007252:Influenza Vaccines / Q000627:therapeutic use; D007251:Influenza, Human / Q000517:prevention & control*; D008875:Middle Aged; D014481:United States; D014486:United States Food and Drug Administration; D014611:Vaccination
D007252:Influenza Vaccines