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Published in: EcoHealth 3/2019

01-09-2019 | Flea | Original Contribution

Zoonotic Trypanosomes in Rats and Fleas of Venezuelan Slums

Authors: Herakles A. Garcia, Carlos J. Rangel, Paola A. Ortíz, Carlos O. Calzadilla, Raul A. Coronado, Arturo J. Silva, Arlett M. Pérez, Jesmil C. Lecuna, Maria E. García, Aixa M. Aguirre, Marta M. G. Teixeira

Published in: EcoHealth | Issue 3/2019

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Abstract

Rattus spp. are reservoirs of many human zoonoses, but their role in domestic transmission cycles of human trypanosomiasis is underestimated. In this study, we report trypanosome-infected Rattus norvegicus and Rattus rattus in human dwellings in slums neighboring Maracay, a large city near Caracas, the capital of Venezuela. Blood samples of R. norvegicus and R. rattus examined by PCR and FFLB (fluorescent fragment length barcoding) revealed a prevalence of 6.3% / 31.1% for Trypanosoma lewisi (agent of rat- and flea-borne human emergent zoonosis), and 10.5% / 24.6% for Trypanosoma cruzi (agent of Chagas disease). Detection in flea guts of T. lewisi (76%) and, unexpectedly, T. cruzi (21.3%) highlighted the role of fleas as carriers and vectors of these trypanosomes. A high prevalence of rats infected with T. lewisi and T. cruzi and respective flea and triatomine vectors poses a serious risk of human trypanosomiasis in Venezuelan slums. Anthropogenic activities responsible for growing rat and triatomine populations within human dwellings drastically increased human exposure to trypanosomes. This scenario has allowed for the reemergence of Chagas disease as an urban zoonosis in Venezuela and can propitiate the emergence of atypical T. lewisi infection in humans.
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Metadata
Title
Zoonotic Trypanosomes in Rats and Fleas of Venezuelan Slums
Authors
Herakles A. Garcia
Carlos J. Rangel
Paola A. Ortíz
Carlos O. Calzadilla
Raul A. Coronado
Arturo J. Silva
Arlett M. Pérez
Jesmil C. Lecuna
Maria E. García
Aixa M. Aguirre
Marta M. G. Teixeira
Publication date
01-09-2019
Publisher
Springer US
Keywords
Flea
Flea
Published in
EcoHealth / Issue 3/2019
Print ISSN: 1612-9202
Electronic ISSN: 1612-9210
DOI
https://doi.org/10.1007/s10393-019-01440-4

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