Animals 3 Antibodies, Protozoan 3 Argentina 3 Canis familiaris 3 Chagas Disease 3 Chagas disease 3 Chronic infection 3 Dog Diseases 3 Dogs 3 Enzyme-Linked Immunosorbent Assay 3 Hemagglutination Tests 3 Sensitivity and Specificity 3 Serology 3 Surveillance 3 Trypanosoma 3 Trypanosoma cruzi 3 animal 3 animal disease 3 article 3 blood 3 dog 3 dog disease 3 enzyme linked immunosorbent assay 3 hemagglutination test 3 immunology 3 protozoon antibody 3 sensitivity and specificity 3 standard 3