Protection conferred by live influenza vaccines.
D002986:Clinical Trials as Topic; D005069:Evaluation Studies as Topic; D006801:Humans; D007252:Influenza Vaccines / Q000627:therapeutic use*; D007251:Influenza, Human / Q000517:prevention & control; D012141:Respiratory Tract Infections / Q000517:prevention & control*
D007252:Influenza Vaccines