Hemagglutination Tests Animals 6 Enzyme-Linked Immunosorbent Assay 6 animal 6 article 6 blood 6 enzyme linked immunosorbent assay 6 hemagglutination test 6 immunology 6 Antibodies, Protozoan 4 Aphthovirus 4 Argentina 4 Canis familiaris 4 Chagas Disease 4 Chagas disease 4 Chronic infection 4 Dog Diseases 4 Dogs 4 Male 4 Sensitivity and Specificity 4 Serology 4 Support, Non-U.S. Gov't 4 Surveillance 4 Trypanosoma 4 Trypanosoma cruzi 4 animal disease 4 dog 4 dog disease 4 protozoon antibody 4 sensitivity and specificity 4