title: [Sero-epidemiologic surveillance study of influenza].
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D005859:Germany, East; D006801:Humans; D007223:Infant; D007251:Influenza, Human / Q000276:immunology*; D008875:Middle Aged; D011159:Population Surveillance; D012698:Serologic Tests
vernacular_title: Ergebnisse einer seroepidemiologischen Surveillance-Studie bei Influenza