title: [Sero-epidemiological studies on the infection rate of influenza A 2  Hongkong, A swine and B].
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000906:Antibodies / Q000032:analysis*; D002648:Child; D002675:Child, Preschool; D005860:Germany, West; D006385:Hemagglutination Inhibition Tests; D006801:Humans; D007223:Infant; D007251:Influenza, Human / Q000453:epidemiology*; D008875:Middle Aged; D009975:Orthomyxoviridae / Q000276:immunology; D011446:Prospective Studies; D012189:Retrospective Studies
chemical_list: D000906:Antibodies
vernacular_title: Seroepidemiologische Untersuchungen zur Druchseuchung der Bevölkerung mit Influenzavirus A 2  Hongkong, A swine und.