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Instituto Oswaldo Cruz, Ministério da Saúde, Memórias do Instituto Oswaldo Cruz., 1(99), p. 1-12, 2004

DOI: 10.1590/s0074-02762004000100001

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Trypanosoma cruzi: Genetic Structure of Populations and Relevance of Genetic Variability to the Pathogenesis of Chagas Disease

Journal article published in 2004 by Andréa M. Macedo, Carlos R. Machado ORCID, Riva P. Oliveira ORCID, Sérgio Dj J. Pena
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

Chagas disease, caused by the protozoan Trypanosoma cruzi, has a variable clinical course, ranging from symptomless infection to severe chronic disease with cardiovascular or gastrointestinal involvement or, occasionally, overwhelming acute episodes. The factors influencing this clinical variability have not been elucidated, but it is likely that the genetic variability of both the host and the parasite are of importance. In this work we review the the genetic structure of T. cruzi populations and analyze the importance of genetic variation of the parasite in the pathogenesis of the disease under the light of the histotropic-clonal model.