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      Household risk factors associated to infestation of Triatoma dimidiata, the Chagas disease vector in Central Region of Veracruz, Mexico Translated title: Factores de riesgo intradomicialiarios para la infestación de Triatoma dimidiata, transmisor de la enfermedad de Chagas, en la región central del estado de Veracruz, México

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          Abstract

          Objective. To evaluate risk factors facilitating the colonization of dwellings by Triatoma dimidiata in the central region of the state of Veracruz. Materials and methods. We applied socioeconomic questionnaires and entomologic surveys in three localities (Chavarrillo, Soyacuautla and Arroyo Agrio) in central Veracruz involving 115 households. Results. We found that the main risk factors were the predominance of unplastered walls and particularly those made of light weight aggregate concrete blocks and wood. At Chavarrillo, houses usually have unplastered walls, whereas in Soyocuautla walls are commonly manufactured with wood. In Arroyo Agrio, the phenomenon was seasonal, and bugs were commonly found in the dry season, particularly in relatively new houses, less than 20 years old. Conclusions. These results help to improve the surveillance capacity for this vector and the control strategies to reduce the transmission of Chagas disease in the state of Veracruz and other sites where this species is present.

          Translated abstract

          Objetivo. Determinar los factores de riesgo que facilitan la colonización intradomiciliaria de Triatoma dimidiata en la región central del estado de Veracruz. Material y métodos. Se aplicaron encuestas socioeconómicas y entomológicas en ll5 casas en tres localidades (Chavarrillo, Soyacuautla y Arroyo Agrio). Resultados. El principal factor de riesgo para la colonización intradomicialiaria de T. dimidiata fue la presencia de paredes sin revocar, especialmente aquellas construidas con block y madera. En Chavarrillo el factor principal fueron las paredes sin revocar, en Soyacuautla las paredes de madera y en Arroyo Agrio las casas con menos de 20 años de haber sido construidas, junto con la temporada de secas. Conclusión. Los resultados encontrados pueden coadyuvar a mejorar los programas de vigilancia y control entomológico con el fin de reducir la transmisión de la enfermedad de Chagas vía vectorial en el estado de Veracruz y otros estados donde T. dimidiata puede estar presente.

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          Classification and Regression Trees: A Powerful Yet Simple Technique for Ecological Data Analysis

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            A checklist of the current valid species of the subfamily Triatominae Jeannel, 1919 (Hemiptera, Reduviidae) and their geographical distribution, with nomenclatural and taxonomic notes

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              Triatoma dimidiata (Latreille, 1811): a review of its diversity across its geographic range and the relationship among populations.

              Due to its vast diversity the Chagas vector, Triatoma dimidiata, has been merged and split into species and subspecies since its first description in 1811. Across its geographic range from Southern Mexico to Northern Peru populations differ in their biology and ethology in many ways including those that directly affect vector capacity and competence. Recent phenetic and genetic data suggest that T. dimidiata can be divided into at least three clades and in fact may be a polytypic species or species complex. To effectively target this vector, it will be necessary to clearly understand how "T. dimidiata" is genetically partitioned both at the taxonomic and population level.
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                Author and article information

                Journal
                spm
                Salud Pública de México
                Salud pública Méx
                Instituto Nacional de Salud Pública (Cuernavaca, Morelos, Mexico )
                0036-3634
                April 2014
                : 56
                : 2
                : 213-220
                Affiliations
                [03] Xalapa Veracruz orgnameInstituto de Ecología orgdiv1Red de Biología Evolutiva México
                [02] Puebla orgnameBenemérita Universidad Autónoma de Puebla orgdiv1Escuela de Biología México
                [01] Xalapa Veracruz orgnameInstituto de Ecología orgdiv1Red de Ambiente y Sustentabilidad México
                Article
                S0036-36342014000200009 S0036-3634(14)05600200009
                70daa8f6-db8e-412b-af48-a642928b12b4

                This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.

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                Figures: 0, Tables: 0, Equations: 0, References: 29, Pages: 8
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                SciELO Mexico

                Self URI: Full text available only in PDF format (EN)
                Categories
                Original articles

                Chagas disease,Mexico,enfermedad de Chagas,México,Triatominae,control de vectores,factores de riesgo,vector control,risk factors

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