Abstract
Trypanosoma cruzi lineages, microsatellite allelic polymorphism, and mithocondrial gene haplotypes were directly typified from peripheral blood and cerebrospinal fluid specimens of a Bolivian patient with Chagas disease with accompanying AIDS and central nervous system severe involvement. Of note, the patient's blood was infected by a mixture of T. cruzi I and T. cruzi IId/e polyclonal populations while the cerebrospinal fluid showed only a monoclonal T. cruzi I population. Our findings do not corroborate the original assumption of innocuity for T. cruzi I in the southern cone of the Americas and highlight lineage I tropism for central nervous system causing lethal Chagas reactivation.
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