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    Brenière SF, Pietrokovsky S, Gastelum EM, Bosseno MF, Soto MM, Ouaissi A, Kasten FL, Wisnivesky-Colli C, 2004. Feeding patterns of Triatoma longipennis Usinger (Hemiptera, Reduviidae) in peridomestic habitats of a rural community in Jalisco State, Mexico. J Med Entomol 41 :1015–1020.

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    Bosseno MF, Barnabé C, Magallón Gastelúm E, Lozano Kasten F, Ramsey J, Espinoza B, Brenière SF, 2002. Predominance of Trypanosoma cruzi lineage I in Mexico. J Clin Microbiol 40 :627–632.

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IDENTIFICATION IN TRIATOMINE VECTORS OF FEEDING SOURCES AND TRYPANOSOMA CRUZI VARIANTS BY HETERODUPLEX ASSAY AND A MULTIPLEX MINIEXON POLYMERASE CHAIN REACTION

MARIE-FRANCE BOSSENOUnite de Recherche 008 Pathogénie et Epidémiologie des Trypanosomatidés, Institut de Recherche pour le Développement, Montpellier, France; Departamento de Salud Pública, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara, Jalisco, Mexico; Laboratorio de Parasitología, Centro de Investigaciones Regionales, Universidad Autónoma de Yucatán, Yucatán, Mexico

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LUIS SANTOS GARCÍAUnite de Recherche 008 Pathogénie et Epidémiologie des Trypanosomatidés, Institut de Recherche pour le Développement, Montpellier, France; Departamento de Salud Pública, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara, Jalisco, Mexico; Laboratorio de Parasitología, Centro de Investigaciones Regionales, Universidad Autónoma de Yucatán, Yucatán, Mexico

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FRANÇOISE BAUNAUREUnite de Recherche 008 Pathogénie et Epidémiologie des Trypanosomatidés, Institut de Recherche pour le Développement, Montpellier, France; Departamento de Salud Pública, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara, Jalisco, Mexico; Laboratorio de Parasitología, Centro de Investigaciones Regionales, Universidad Autónoma de Yucatán, Yucatán, Mexico

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EZEQUIEL MAGALLÓN GASTELÚMUnite de Recherche 008 Pathogénie et Epidémiologie des Trypanosomatidés, Institut de Recherche pour le Développement, Montpellier, France; Departamento de Salud Pública, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara, Jalisco, Mexico; Laboratorio de Parasitología, Centro de Investigaciones Regionales, Universidad Autónoma de Yucatán, Yucatán, Mexico

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MARGARITA SOTO GUTIERREZUnite de Recherche 008 Pathogénie et Epidémiologie des Trypanosomatidés, Institut de Recherche pour le Développement, Montpellier, France; Departamento de Salud Pública, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara, Jalisco, Mexico; Laboratorio de Parasitología, Centro de Investigaciones Regionales, Universidad Autónoma de Yucatán, Yucatán, Mexico

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FELIPE LOZANO KASTENUnite de Recherche 008 Pathogénie et Epidémiologie des Trypanosomatidés, Institut de Recherche pour le Développement, Montpellier, France; Departamento de Salud Pública, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara, Jalisco, Mexico; Laboratorio de Parasitología, Centro de Investigaciones Regionales, Universidad Autónoma de Yucatán, Yucatán, Mexico

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ERIC DUMONTEILUnite de Recherche 008 Pathogénie et Epidémiologie des Trypanosomatidés, Institut de Recherche pour le Développement, Montpellier, France; Departamento de Salud Pública, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara, Jalisco, Mexico; Laboratorio de Parasitología, Centro de Investigaciones Regionales, Universidad Autónoma de Yucatán, Yucatán, Mexico

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SIMONE FRÉDÉRIQUE BRENIÈREUnite de Recherche 008 Pathogénie et Epidémiologie des Trypanosomatidés, Institut de Recherche pour le Développement, Montpellier, France; Departamento de Salud Pública, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara, Jalisco, Mexico; Laboratorio de Parasitología, Centro de Investigaciones Regionales, Universidad Autónoma de Yucatán, Yucatán, Mexico

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Feeding sources of triatomine vectors (Triatoma longipennis) collected in peridomiciles in Mexico were identified by a heteroduplex assay developed with triatomine blood meals. Trypanosoma cruzi parasites were also characterized in the same blood meal samples by multiplex-polymerase chain reaction assay of mini-exon gene inter-genic regions. The main blood meal source was from rats, but the bugs were able to feed on a wide variety of hosts, and human blood meals were identified. Trypanosoma cruzi was the only flagellate species identified in the blood meals. All populations belong to the T. cruzi I lineage, a result that is consistent with the previously assumed predominance of this lineage in Mexico. This combination of blood meal and T. cruzi lineage identification provides a powerful tool for understanding T. cruzi transmission cycles.

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