Direct molecular identification of Trypanosoma cruzi discrete typing units in domestic and peridomestic Triatoma infestans and Triatoma sordida from the Argentine Chaco.
作者： L. MAFFEY , M. V. CARDINAL , P. C. ORDÓÑEZ-KRASNOWSKI , L. A. LANATI , M. A. LAURICELLA
DOI: 10.1017/S0031182012000856
关键词:
摘要: We assessed the distribution of Trypanosoma cruzi Discrete Typing Units (DTUs) in domestic and peridomestic Triatoma infestans sordida specimens collected a well-defined rural area Pampa del Indio, northeastern Argentina. Microscopically-positive bugs were randomly selected with multi-level sampling design, DTUs identified using direct PCR strategies. TcVI predominated 61% 69 T. 56% 9 sordida. TcV was secondary DTU (16%) found 1 specimen (11%). Three (33%) infected TcI, also local Didelphis albiventris opossums. Mixed infections occurred rarely (5%) detected both directly from bugs' rectal ampoule parasite cultures. The bug collection sites significantly associated. Bugs almost exclusively captured domiciles whereas those similarly peridomiciles. All mixed domiciles. TcV-infected fed more often on humans than dogs, TcVI-infected showed reverse pattern. is probable sylvatic vector TcI linked to D. albiventris, could represent domestic/peridomestic cycle.
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