![]() ![]() cruzi infection, predominantly chronic cases with a high morbidity/mortality burden. In Brazil, it is estimated that in 2015 there was between 1,4–3,4 million cases of T. Currently, it is estimated that 5.7 million people are infected worldwide and other 70 million are at risk of acquiring the infection. ![]() ![]() It is considered a neglected disease by the World Health Organization and its transmission is closely associated with poverty. Persistent house infestation in Tauá may be attributed to the occurrence of postspraying residual foci and the invasion of triatomines from their natural habitats.Ĭhagas disease is a chronic infection whose etiological agent is the protozoan Trypanosoma cruzi (Protozoa, Sarcomastigophora, Kinetoplastida, Trypanosomatidae). brasiliensis, overlapping the different environments. Observed homogeneity can be explained by the great dispersal capacity of T. (3) Analysis of the reinfestation process showed that the domiciliary units investigated had different sources of infestation despite of its proximity. For (2), Pairwise F ST indicated alterations in the genetic profile of the triatomines along the time. Absence of clustering indicates a panmitic unit, with free gene flow. AMOVA indicated that total variation is mainly represented by individual differences. On the analysis (1) global and pairwise F ST values suggested absence of clusters among the area. We evaluated: (1) general variability among local of captures (2) variability along the time analysis (2009, 20) (3) and reinfestation process. brasiliensis after residual insecticide spraying in five surveys conducted in a well-defined rural area located in the municipality of Tauá, Ceará, between 20. Using microsatellite markers, we characterized the variability and dynamics of infestation and reinfestation of T. Despite of its epidemiological relevance, there are few studies on its genetic variability. Triatoma brasiliensis Neiva, 1911 is the main vector of Trypanosoma cruzi in the caatinga of Northeastern Brazil. ![]()
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