Objectives: To perform an epidemiological study on presence of Chaga’s disease and its vectors at northern and nor oriental Peru. Design: Descriptive, transversal study. Setting: Daniel A. Carrion Tropical Medicine Institute, Faculty of Medicine, Universidad Nacional Mayor de San Marcos, Lima, Peru. Biologic material: Triatomines positive to Trypanosoma cruzi Chagas 1909; one month-old Swiss- Webster male rats. Interventions: In September 2008 a visit was done to Chilete, Paredones, Contumaza province, Cajamarca, and to Pampa Larca, La Puerta, Guitarras and Suyo at Ayabaca province, Piura, collecting 10 Panstrongylus chinai (Del Ponte, 1929) specimens at Piura and 12 Panstrongylus herreri (Wygodzinsky, 1948) specimens at Chilete, Cajamarca. Trypanosoma strains were isolated in Swiss Webster white male one month-old rats, and maintained by successive transfers. Both parasitemia curve an...