Live attenuated influenza virus vaccine.
D000367:Age Factors; D001424:Bacterial Infections / Q000276:immunology; D002648:Child; D006801:Humans; D007114:Immunization / Q000009:adverse effects; D007252:Influenza Vaccines / Q000009:adverse effects*; D012141:Respiratory Tract Infections / Q000209:etiology*; D014613:Vaccines, Attenuated / Q000009:adverse effects*
D007252:Influenza Vaccines; D014613:Vaccines, Attenuated