Special message from the office of the Surgeon General: be prepared for flu season.
D004196:Disease Outbreaks; D006801:Humans; D053118:Influenza A Virus, H1N1 Subtype; D009980:Influenza A virus; D007252:Influenza Vaccines / Q000008:administration & dosage*; D007251:Influenza, Human / Q000453:epidemiology* / Q000517:prevention & control*; D009747:Nutritional Physiological Phenomena / Q000502:physiology*; D014481:United States / Q000453:epidemiology
D007252:Influenza Vaccines