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Phylogeography and Genetic Variation of Triatoma dimidiata, the Main Chagas Disease Vector in Central America, and Its Position within the Genus Triatoma
The distinction between the five different taxa furnishes a new frame for future analyses of the different vector transmission capacities and epidemiological characteristics of Chagas disease, and indicates that T. dimidiata will offer problems for control, although dwelling insecticide spraying might be successful against introduced populations in Ecuador.
The geographical distribution of vectors of Chagas' disease and populations at risk of infection in Guatemala
Based on the incidence of Trypanosma cruzi infection in humans in the distributional areas of the triatomines, R. prolixus appear to be a more competent vector than T. dimidiata, which is difficult to control in Central America.
Two Distinct Triatoma dimidiata (Latreille, 1811) Taxa Are Found in Sympatry in Guatemala and Mexico
Understanding of the taxonomy and population subdivision of T. dimidiata is contributed to an understanding of the Taxonomic ambiguity which confounds control of this major parasitic disease in Mesoamerica.
Epidemiology of Chagas disease in Guatemala: infection rate of Triatoma dimidiata, Triatoma nitida and Rhodnius prolixus (Hemiptera, Reduviidae) with Trypanosoma cruzi and Trypanosoma rangeli
A five-year domiciliary collection in the 22 departments of Guatemala showed that out of 4,128 triatomines collected, 1,675 were Triatoma dimidiata, 2,344 were Rhodnius prolixus Stal 1859, and only 109 were T. nitida Usinger 1939, and the sex ratios for all three species were significantly skewed.
Utility of the polymerase chain reaction in detection of Trypanosoma cruzi in Guatemalan Chagas' disease vectors.
Analysis of anatomic sites in addition to the rectal sample may be necessary for accurate assessment of infection in particular vectors, and the PCR is significantly more sensitive than microscopy for detection of T. cruzi in R. prolixus.
Morphometric analysis of Triatoma dimidiata populations (Reduviidae:Triatominae) from Mexico and Northern Guatemala.
Triatoma dimidiata is one of the major vectors of Chagas disease in Latin America. Its range includes Mexico, all countries of Central America, Colombia, and Ecuador. In light of recent genetic
House improvements and community participation in the control of Triatoma dimidiata re-infestation in Jutiapa, Guatemala.
A cross-disciplinary study was conducted addressing T. dimidiata infestation, household hygiene, and housing construction in Guatemala focusing on local materials and cultural aspects that could lead to long-term improvements in wall construction.
Risk factors for intradomiciliary infestation by the Chagas disease vector Triatoma dimidiatain Jutiapa, Guatemala.
Control strategies against T. dimidiata should include the introduction of better-quality but inexpensive plastering formulations and better sanitation practices, which should not only reduce or eliminate infestation, but also prevent vector reinfestation.
The Chagas Vector, Triatoma dimidiata (Hemiptera:Reduviidae), is Panmictic within and Among Adjacent Villages in Guatemala
The low genetic distance and fixation indices, and high heterozygosity suggest that the subpopulations in the houses and in the adjacent villages are not reproductively isolated but are in fact, one large panmictic population.