[Characteristics of 2 epidemic outbreaks of influenza in 1981].
D000293:Adolescent; D000914:Antibodies, Viral / Q000032:analysis; D002648:Child; D002675:Child, Preschool; D004196:Disease Outbreaks / Q000453:epidemiology*; D006801:Humans; D009980:Influenza A virus / Q000276:immunology / Q000302:isolation & purification; D007251:Influenza, Human / Q000453:epidemiology* / Q000276:immunology / Q000382:microbiology; D007623:Kazakhstan; D014505:Urban Population
D000914:Antibodies, Viral
Kharakteristika dvukh épidemicheskikh vspyshek grippa v 1981 g.