Vaccination against influenza in Poland, 1953/56.
D000281:Administration, Intranasal; D035843:Biomedical Research; D006801:Humans; D007252:Influenza Vaccines; D007251:Influenza, Human / Q000517:prevention & control*; D011044:Poland; D012574:Schools; D014611:Vaccination; D014613:Vaccines, Attenuated
D007252:Influenza Vaccines; D014613:Vaccines, Attenuated
INFLUENZA/prevention and control