[Increase of the immunogenic activity of live influenza vaccine by means of a 3-stage immunization of susceptible persons].
D006801:Humans; D007114:Immunization; D007252:Influenza Vaccines; D007251:Influenza, Human; D014611:Vaccination; D014613:Vaccines, Attenuated
D007252:Influenza Vaccines; D014613:Vaccines, Attenuated
INFLUENZA VACCINE