title: [Epidemiologic survey of influenza cases with early clinical symptoms of epidemic hemorrhagic fever (author's transl)].
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D004812:Epidemiologic Methods; D005260:Female; D006480:Hemorrhagic Fever with Renal Syndrome / Q000175:diagnosis*; D006801:Humans; D007251:Influenza, Human / Q000150:complications / Q000453:epidemiology*; D008297:Male; D008875:Middle Aged