title: [Analysis of respiratory virus infections in the GDR in the first quarter of 1971].
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D002675:Child, Preschool; D005859:Germany, East; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008875:Middle Aged; D011159:Population Surveillance; D012141:Respiratory Tract Infections / Q000453:epidemiology*; D014777:Virus Diseases / Q000453:epidemiology*
vernacular_title: Analyse respiratorischer Virusinfektionen in der DDR für das I. Quartal 1971.