Further trials of live influenza vaccine.
D003168:Complement Fixation Tests; D006385:Hemagglutination Inhibition Tests; D006801:Humans; D007252:Influenza Vaccines; D007251:Influenza, Human / Q000276:immunology*; D009500:Neutralization Tests; D009975:Orthomyxoviridae / Q000302:isolation & purification; D014611:Vaccination
D007252:Influenza Vaccines