Active immunization with influenza virus A and B in infants and children.
D002648:Child; D006801:Humans; D007223:Infant; D007252:Influenza Vaccines; D007251:Influenza, Human / Q000276:immunology*; D029521:Alphainfluenzavirus; D014611:Vaccination; D014612:Vaccines
D007252:Influenza Vaccines; D014612:Vaccines
INFLUENZA/immunology; VACCINES AND VACCINATION