Risk factors for reinvasion of human dwellings by sylvatic triatomines in northern Bahia State, Brazil

Abstract

The aim of this study in Curaça, Bahia, Northeast Brazil was to explore possible factors associated with the infestation of human dwellings by Triatoma brasiliensis or Triatoma pseudomaculata, two sylvatic triatomine species. We use multiple logistic regression analysis to show how structural features of the peridomiciliary area combine with the number of animals and sociological factors to allow infestation of some dwellings. It is suggested that T. brasiliensis is associated with human activities, while T. pseudomaculata is associated with vegetation and animals. Peridomiciliary farm animals are a strong risk factor for triatomine infestation.

First report of Trypanosoma cruziinfection in naturally infected dogs from southern Bahia, Brazil

“…Nevertheless, according to the Brazilian Health Minister (BRASIL, 2005), the State of Bahia is the only one in the country that still presents infestation by T. infestans, with 93 of the 417 municipalities situated in risk areas or presenting the vectors over the past years. Moreover, there are reports that suggest the participation of triatomine bugs, otherwise considered sylvatic, in the transmission of the disease in that state, for instance T. pseudomaculata, T. tibiamaculata and T. brasiliensis (ALMEIDA et al, 2009;DIAS-LIMA;SHERLOCK, 2000;WALTER et al, 2005;SANTANA et al, 2011). Besides, this data suggest the maintenance of vectorial importance in T. cruzi transmission in that region.…”

Eco-Epidemiology of Chagas Disease in an Endemic Area of Colombia: Risk Factor Estimation, Trypanosoma cruzi Characterization and Identification of Blood-Meal Sources in Bugs

“…These building materials have been previously identified as risk factors for Chagas disease in Colombia and other countries [34][35][36][37][38][39][40] and might explain the proportions of houses with presence of vectors found in these communities because the number of houses constructed with these materials is higher in Seminke, followed by Marocazo, and finally by Sabana de Joaquina.…”

Nueva trampa para la captura de triatominos en hábitats silvestres y peridomésticos

“…Nueva trampa para captura de triatominos Otras especies de hábitat silvestre pueden actuar como vectores potenciales de Trypanosoma cruzi, al incursionar a los domicilios humanos, situación que ha despertado el interés por conocer los aspectos ecológicos y de comportamiento, que pueden ser la clave para entender los procesos que llevan a la colonización inicial y la recolonización posterior a las intervenciones de control (3)(4)(5)(6)(7)(8)(9)(10)(11).…”