Vaccination against influenza A.
D004196:Disease Outbreaks / Q000517:prevention & control; D004341:Drug Evaluation; D005544:Forecasting; D006801:Humans; D009980:Influenza A virus / Q000235:genetics; D007252:Influenza Vaccines / Q000032:analysis / Q000302:isolation & purification / Q000592:standards; D007251:Influenza, Human / Q000276:immunology / Q000517:prevention & control*; D014611:Vaccination / Q000009:adverse effects; D014613:Vaccines, Attenuated
D007252:Influenza Vaccines; D014613:Vaccines, Attenuated