title: Serological investigations on the circulation of an influenza virus A(H1N1) strain in swine and horses.
mesh_terms: D000818:Animals; D000914:Antibodies, Viral / Q000032:analysis; D006385:Hemagglutination Inhibition Tests; D006734:Horse Diseases / Q000453:epidemiology*; D006736:Horses; D006801:Humans; D053118:Influenza A Virus, H1N1 Subtype; D009980:Influenza A virus / Q000302:isolation & purification; D007251:Influenza, Human / Q000453:epidemiology / Q000276:immunology / Q000662:veterinary*; D012383:Romania; D013552:Swine; D013553:Swine Diseases / Q000453:epidemiology*
chemical_list: D000914:Antibodies, Viral