title: [A study on the epidemic characteristics of influenza in Qingdao].
authors: K C
authors: KC
authors: Sun
mesh_terms: D000907:Antibodies, Bacterial / Q000032:analysis; D002681:China; D005260:Female; D006801:Humans; D009980:Influenza A virus / Q000276:immunology; D009981:Influenza B virus / Q000276:immunology; D007251:Influenza, Human / Q000453:epidemiology*; D008297:Male
chemical_list: D000907:Antibodies, Bacterial