Argentina male Animals 40 Male 40 female 40 Female 38 animal 34 isolation and purification 34 article 30 parasitology 26 Triatoma infestans 18 Humans 16 Trypanosoma cruzi 16 disease carrier 16 human 16 Chagas Disease 14 Chagas disease 14 Insect Vectors 14 controlled study 14 nonhuman 14 Prevalence 12 adult 12 animal disease 12 classification 12 polymerase chain reaction 12 prevalence 12 rural area 12 adolescent 10 aged 10 child 10