title: [Characteristics of influenza and acute respiratory infection morbidity during an interepidemic period (based on Leningrad data)].
mesh_terms: D000208:Acute Disease; D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D004196:Disease Outbreaks; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D007251:Influenza, Human / Q000453:epidemiology*; D012141:Respiratory Tract Infections / Q000453:epidemiology*; D012426:Russia; D014505:Urban Population
vernacular_title: Kharakteristika zabolevaemosti grippom i ostrymi respiratornymi infektsiiami v mezhépidemicheskiĭ period (po materialam Leningrada)