Argentina Trypanosoma cruzi nonhuman Chagas disease 66 Triatoma infestans 64 Animals 62 Chagas Disease 62 article 62 human 44 Humans 42 Triatoma 42 rural area 42 Insect Vectors 36 controlled study 36 dog 34 parasite transmission 34 Dogs 32 polymerase chain reaction 32 animal 30 disease transmission 30 Article 28 Trypanosoma 28 xenodiagnosis 28 Canis familiaris 26 Dog Diseases 26 female 26 Female 24 Male 24 disease carrier 24 parasitology 24