[Etiology of local influenza outbreaks in 1977].
D004196:Disease Outbreaks / Q000453:epidemiology*; D006801:Humans; D009980:Influenza A virus / Q000302:isolation & purification; D007251:Influenza, Human / Q000453:epidemiology / Q000209:etiology* / Q000382:microbiology; D014586:USSR
K étiologii lokal'nykh vspyshek grippa v 1977 godu.