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Título : High infection rates of triatoma dimidiata are associated with low levels of trypanosoma cruzi seroprevalence in Pedro Carbo, Ecuador. Use of a tc24 gene-based PCR approach.
Autor : Guevara, Ángel
Garzón, E.
Bowen, C.
Córdova, X.
Gómez, E.
Ouaissi, A.
Palabras clave : ENFERMEDAD DE CHAGAS
TRYPANOSOMA CRUZI
TRIATOMA DIMIDIATA
CAPACIDAD VECTORIAL
REACCIÓN EN CADENA DE LA POLIMERASA
ECUADOR
Fecha de publicación : 2005
Editorial : París : Princeps Editions
Citación : Guevara Ángel y otros (2005). High infection rates of triatoma dimidiata are associated with low levels of trypanosoma cruzi seroprevalence in Pedro Carbo Ecuador Use of a tc24 gene-based PCR approach. Parasite (1): 65 - 68
Resumen : In control programs for vectorial transmission of Chagas' disease, conventional microscopic procedures are generally performed to determine baseline levels of infectivity of vectors. Reported here are data using Polymerase Chain Reaction in the detection of Trypanosoma cruzi in Triatoma dimidiata, one of the principal vectors of Chagas' disease in Ecuador. The microscopy and PCR techniques showed a high percentage of vector infection in Pedro Carbo, province of Guayas (Ecuador), with 44.16% and 46.13% positive insects, respectively. This contrasted with the very low Chagas seropositivity recorded (0.5%). Since T. dimidiata was the only vector of the Chagas' disease found in Pedro Carbo and looking at the vector behavior, our data suggest that despite the high T. dimidiata infection, the low Chagas seropositivity detected is closely associated with the epidemiological and ecological context of T. dimidiata in Pedro Carbo.
URI : http://www.dspace.uce.edu.ec/handle/25000/14892
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