scholarly journals Amazonian Reservoir Hosts of Trypanosoma cruzi

2019 ◽  
Author(s):  
Jocelyn Ginette Pérez Lazo ◽  
Pedro Mayor ◽  
Andrés G. Lescano
Keyword(s):  
Trypanosoma Cruzi ◽  
Reservoir Hosts

scholarly journals Chagas' disease in the Brazilian Amazon: I - a short review

1994 ◽  
Vol 36 (4) ◽  
pp. 363-368 ◽  
Author(s):  
José Rodrigues Coura ◽  
Angela Cristina Verissimo Junqueira ◽  
Cristina Maria Giordano ◽  
Ilra Renata Komoda Funatsu
Keyword(s):  
Trypanosoma Cruzi ◽  
Chagas Disease ◽  
Human Population ◽  
Brazilian Amazon ◽  
Short Review ◽  
Ecological Balance ◽  
Domestic Cycle ◽  
Endemic Areas ◽  
Reservoir Hosts

At least eighteen species of triatominae have been found in the Brazilian Amazon, nine of them naturally infected with Trypanosoma cruzi or "cruzi-like" trypanosomes and associated with numerous wild reservoirs. Despite the small number of human cases of Chagas' disease described to date in the Brazilian Amazon the risk that the disease will become endemic in this area is increasing for the following reasons: a) uncontrolled deforestation and colonization altering the ecological balance between reservoir hosts and wild vectors; b) the adaptation of reservoir hosts of T.cruzi and wild vectors to peripheral and intradomiciliary areas, as the sole feeding alternative; c) migration of infected human population from endemic areas, accompanied by domestic reservoir hosts (dogs and cats) or accidentally carrying in their baggage vectors already adapted to the domestic habitat. In short, risks that Chagas' disease will become endemic to the Amazon appear to be linked to the transposition of the wild cycle to the domestic cycle in that area or to transfer of the domestic cycle from endemic areas to the Amazon.

scholarly journals A lineage-specific rapid diagnostic test (Chagas Sero K-SeT) identifies Brazilian Trypanosoma cruzi II/V/VI reservoir hosts among diverse mammalian orders

PLoS ONE ◽  
2020 ◽  
Vol 15 (1) ◽  
pp. e0227828 ◽  
Author(s):  
Mairi C. W. McClean ◽  
Tapan Bhattacharyya ◽  
Pascal Mertens ◽  
Niamh Murphy ◽  
Quentin Gilleman ◽  
...  
Keyword(s):  
Trypanosoma Cruzi ◽  
Diagnostic Test ◽  
Rapid Diagnostic Test ◽  
Reservoir Hosts

scholarly journals Trypanosoma cruzi transmission in the wild and its most important reservoir hosts in Brazil

2018 ◽  
Vol 11 (1) ◽  
Author(s):  
Ana Maria Jansen ◽  
Samanta Cristina das Chagas Xavier ◽  
André Luiz Rodrigues Roque
Keyword(s):  
Trypanosoma Cruzi ◽  
In The Wild ◽  
Reservoir Hosts

scholarly journals Extraordinary Trypanosoma cruzi diversity within single mammalian reservoir hosts implies a mechanism of diversifying selection

2011 ◽  
Vol 41 (6) ◽  
pp. 609-614 ◽  
Author(s):  
Martin S. Llewellyn ◽  
John B. Rivett-Carnac ◽  
Sinead Fitzpatrick ◽  
Michael D. Lewis ◽  
Matthew Yeo ◽  
...  
Keyword(s):  
Trypanosoma Cruzi ◽  
Diversifying Selection ◽  
Reservoir Hosts

scholarly journals Correction: A lineage-specific rapid diagnostic test (Chagas Sero K-SeT) identifies Brazilian Trypanosoma cruzi II/V/VI reservoir hosts among diverse mammalian orders

PLoS ONE ◽  
2020 ◽  
Vol 15 (4) ◽  
pp. e0231566 ◽  
Author(s):  
Mairi C. W. McClean ◽  
Tapan Bhattacharyya ◽  
Pascal Mertens ◽  
Niamh Murphy ◽  
Quentin Gilleman ◽  
...  
Keyword(s):  
Trypanosoma Cruzi ◽  
Diagnostic Test ◽  
Rapid Diagnostic Test ◽  
Reservoir Hosts

scholarly journals Discrete typing units of Trypanosoma cruzi identified in rural dogs and cats in the humid Argentinean Chaco

Parasitology ◽  
2012 ◽  
Vol 140 (3) ◽  
pp. 303-308 ◽  
Author(s):  
G. F. ENRIQUEZ ◽  
M. V. CARDINAL ◽  
M. M. OROZCO ◽  
L. LANATI ◽  
A. G. SCHIJMAN ◽  
...  
Keyword(s):  
Trypanosoma Cruzi ◽  
Human Infection ◽  
Dasypus Novemcinctus ◽  
Cross Sectional ◽  
Chain Reactions ◽  
Transmission Cycle ◽  
Rural Villages ◽  
Polymerase Chain Reactions ◽  
New Finding ◽  
Reservoir Hosts

SUMMARYThe discrete typing units (DTUs) of Trypanosoma cruzi that infect domestic dogs and cats have rarely been studied. With this purpose we conducted a cross-sectional xenodiagnostic survey of dog and cat populations residing in 2 infested rural villages in Pampa del Indio, in the humid Argentine Chaco. Parasites were isolated by culture from 44 dogs and 12 cats with a positive xenodiagnosis. DTUs were identified from parasite culture samples using a strategy based on multiple polymerase-chain reactions. TcVI was identified in 37 of 44 dogs and in 10 of 12 cats, whereas TcV was identified in 5 dogs and in 2 cats –a new finding for cats. No mixed infections were detected. The occurrence of 2 dogs infected with TcIII –classically found in armadillos– suggests a probable link with the local sylvatic transmission cycle involving Dasypus novemcinctus armadillos and a potential risk of human infection with TcIII. Our study reinforces the importance of dogs and cats as domestic reservoir hosts and sources of various DTUs infecting humans, and suggests a link between dogs and the sylvatic transmission cycle of TcIII.

Modelling the influence of host community composition in a sylvatic Trypanosoma cruzi system

Parasitology ◽  
2017 ◽  
Vol 144 (14) ◽  
pp. 1881-1889 ◽  
Author(s):  
DIANA ERAZO ◽  
JUAN CORDOVEZ ◽  
CAROLINA CABRERA ◽  
JOSE E. CALZADA ◽  
AZAEL SALDAÑA ◽  
...  
Keyword(s):  
Life History ◽  
Trypanosoma Cruzi ◽  
Empirical Data ◽  
Life History Strategy ◽  
Pathogen Transmission ◽  
Host Community ◽  
Vector Borne ◽  
Host Life ◽  
Host Parasite ◽  
Reservoir Hosts

SUMMARYSpecies composition of wild reservoir hosts can influence the transmission and maintenance of multi-host vector borne pathogens. The ‘pace of life’ hypothesis proposes that the life history strategy of reservoir hosts can influence pathogen transmission of vector borne generalist pathogens. We use empirical data to parameterize a mathematical model that investigates the impacts of host life history traits on vector transmission dynamics of the vector-borne multi-host parasite Trypanosoma cruzi in habitats characterized by different degrees of deforestation and varying host community structure. The model considers susceptible and infected vector and host populations. When comparing the proportion of vectors infected with T. cruzi predicted by the model with empirical data, we found a trend of increasing vector infection as anthropogenic landscape disturbance increases for both data and model output. The model's vector infection rates were significantly lower than empirical results, but when incorporating host congenital transmission in the model, vector infection approaches field data. We conclude that intervened habitats associated with r-selected host species communities predict higher proportions of infected vectors.

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