Chagas disease disease transmission 64 Chagas Disease 58 Animals 50 Argentina 50 animal 46 human 46 Trypanosoma cruzi 44 Humans 40 Triatoma infestans 38 nonhuman 38 article 36 Insect Vectors 34 disease carrier 32 Triatoma 30 parasitology 30 Article 26 Female 24 Male 24 adult 24 controlled study 22 female 22 dog 20 insecticide 20 male 20 Dogs 18 Triatominae 18 polymerase chain reaction 18 rural area 18 rural population 18