Influenza vaccine, 1999-2000.
D000328:Adult; D000368:Aged; D002648:Child; D002675:Child, Preschool; D004196:Disease Outbreaks; D005334:Fever / Q000209:etiology; D006801:Humans; D007223:Infant; D007252:Influenza Vaccines / Q000008:administration & dosage* / Q000009:adverse effects; D007251:Influenza, Human / Q000517:prevention & control*; D007273:Injections, Intramuscular; D014611:Vaccination
D007252:Influenza Vaccines