[On the epidemiological effectiveness of live anti-influenza vaccines of types A2 and A, A1, B].
D006801:Humans; D007252:Influenza Vaccines; D007251:Influenza, Human / Q000276:immunology*; D014613:Vaccines, Attenuated
D007252:Influenza Vaccines; D014613:Vaccines, Attenuated
INFLUENZA/immunology