Between a bug and a hard place: Trypanosoma cruzi genetic diversity and the clinical outcomes of Chagas disease
- PMID: 26162928
- PMCID: PMC4784490
- DOI: 10.1586/14787210.2015.1056158
Between a bug and a hard place: Trypanosoma cruzi genetic diversity and the clinical outcomes of Chagas disease
Abstract
Over the last 30 years, concomitant with successful transnational disease control programs across Latin America, Chagas disease has expanded from a neglected, endemic parasitic infection of the rural poor to an urbanized chronic disease, and now a potentially emergent global health problem. Trypanosoma cruzi infection has a highly variable clinical course, ranging from complete absence of symptoms to severe and often fatal cardiovascular and/or gastrointestinal manifestations. To date, few correlates of clinical disease progression have been identified. Elucidating a putative role for T. cruzi strain diversity in Chagas disease pathogenesis is complicated by the scarcity of parasites in clinical specimens and the limitations of our contemporary genotyping techniques. This article systematically reviews the historical literature, given our current understanding of parasite genetic diversity, to evaluate the evidence for any association between T. cruzi genotype and chronic clinical outcome, risk of congenital transmission or reactivation and orally transmitted outbreaks.
Keywords: cardiomyopathy; congenital transmission; diagnostics; genetic diversity; oral outbreaks; reactivation; treatment; • Chagas disease.
References
-
- WHO Chagas disease in Latin America: an epidemiological update based on 2010 estimates. Wkly Epidemiol Rec. 2015;90:33–44. - PubMed
-
- Lent H, Wygodzinsky P. Revision of the Triatominae (Hemiptera, Reduviidae), and their significance as vectors of Chagas’ disease. Bull Am Mus Nat Hist. 1979;63:123–520.
-
- Galvao C, Carcavallo R, Rocha Dda S, Jurberg J. A checklist of the current valid species of the subfamily Triatominae Jeannel, 1919 (Hemiptera, Reduviidae, Triatominae) and their geographical distribution with nomenclatural and taxonomic notes. Zootaxa. 2003;202:1–36.
-
- Coura JR, Dias JC. Epidemiology, control and surveillance of Chagas disease: 100 years after its discovery. Mem Inst Oswaldo Cruz. 2009;104(Suppl 1):31–40. - PubMed
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