This year, reducing your risk for the flu will require two kinds of shots.
D004196:Disease Outbreaks / Q000517:prevention & control*; D005260:Female; D007722:Health Knowledge, Attitudes, Practice; D006801:Humans; D053118:Influenza A Virus, H1N1 Subtype / Q000276:immunology; D007252:Influenza Vaccines / Q000008:administration & dosage*; D007251:Influenza, Human / Q000453:epidemiology* / Q000517:prevention & control; D032541:Mass Vaccination; D011247:Pregnancy; D011251:Pregnancy Complications, Infectious / Q000453:epidemiology / Q000517:prevention & control; D014481:United States
D007252:Influenza Vaccines