[INFLUENCE OF THE NUMBER OF DOSES ON THE EPIDEMIOLOGICAL EFFICACY OF LIVE VACCINE AGAINST INFLUENZA].
D006385:Hemagglutination Inhibition Tests; D006801:Humans; D007252:Influenza Vaccines; D007251:Influenza, Human; D014586:USSR; D014613:Vaccines, Attenuated
D007252:Influenza Vaccines; D014613:Vaccines, Attenuated
HEMAGGLUTINATION INHIBITION TESTS; INFLUENZA VACCINE; USSR
VLIIANIE KRATNOSTI PRIVIVOK NA 'EPIDEMIOLOGICHESKUIU 'EFFEKTIVNOST' ZHIVO I VAKTSINY PROTIV GRIPPA.