Results of further research on influenza in the USSR with special reference to the 1957 pandemic.
D006801:Humans; D007252:Influenza Vaccines; D007251:Influenza, Human / Q000453:epidemiology*; D008511:Medicine; D009975:Orthomyxoviridae; D058873:Pandemics; D012106:Research; D014586:USSR
D007252:Influenza Vaccines
INFLUENZA/epidemiology