Ecological and sociodemographic determinants of house infestation by Triatoma infestans in indigenous communities of the Argentine Chaco

PLoS Neglected Tropical Diseases
M Sol GaspeRicardo E Gürtler

Abstract

The Gran Chaco ecoregion, a hotspot for Chagas and other neglected tropical diseases, is home to >20 indigenous peoples. Our objective was to identify the main ecological and sociodemographic determinants of house infestation and abundance of Triatoma infestans in traditional Qom populations including a Creole minority in Pampa del Indio, northeastern Argentina. A cross-sectional survey determined house infestation by timed-manual searches with a dislodging aerosol in 386 inhabited houses and administered questionnaires on selected variables before full-coverage insecticide spraying and annual vector surveillance. We fitted generalized linear models to two global models of domestic infestation and bug abundance, and estimated coefficients via multimodel inference with model averaging. Most Qom households were larger and lived in small-sized, recently-built, precarious houses with fewer peridomestic structures, and fewer livestock and poultry than Creoles'. Qom households had lower educational level and unexpectedly high residential mobility. House infestation (31.9%) was much lower than expected from lack of recent insecticide spraying campaigns and was spatially aggregated. Nearly half of the infested houses examined had infec...Continue Reading

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Citations

Dec 17, 2019·PLoS Neglected Tropical Diseases·Maria Del Pilar FernándezRicardo E Gürtler
Sep 28, 2017·Memórias do Instituto Oswaldo Cruz·Ana Laura Carbajal-de-la-FuenteRicardo Esteban Gürtler
Oct 9, 2018·Infection, Genetics and Evolution : Journal of Molecular Epidemiology and Evolutionary Genetics in Infectious Diseases·Natalia Paula MacchiavernaMarta Victoria Cardinal
May 13, 2021·PLoS Neglected Tropical Diseases·Marta Victoria CardinalRicardo Esteban Gürtler
May 18, 2020·Pharmacological Research : the Official Journal of the Italian Pharmacological Society·Andréa A S MendonçaRômulo D Novaes

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