House improvements and community participation in the control of Triatoma dimidiata re-infestation in Jutiapa, Guatemala

Monroy, Carlota; Bustamante, Dulce Maria; Pineda, Sandy S.; Rodas, Antonieta; Castro, Xochitl; Ayala, Virgilio; Quiñónes, Javier; Moguel, Bárbara

doi:10.1590/s0102-311x2009001300016

Cited by 72 publications

(93 citation statements)

References 19 publications

(30 reference statements)

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“…rústicos) y techos de lámina o palma, es un factor determinante para la transmisión de la enfermedad de Chagas. En Guatemala se ha demostrado que la mejora en las condiciones de la vivienda, reduce la presencia de T. dimidiata (Monroy et al 2009).…”

Section: Discussionunclassified

Indicadores de infestación, colonización e infección de Triatoma dimidiata (Latreille) (Hemiptera: Reduviidae) en Campeche, México

Hernández¹,

Rebollar-Téllez²,

Infante³

et al. 2010

Neotrop. entomol.

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Indicators of Infestation, Colonization and Infection of Triatoma dimidiata (Latreille) (Hemiptera:Reduviidae) in Campeche, México ABSTRACT -Triatoma dimidiata (Latreille) is considered to be one of the primary vectors of Chagas disease in Southern Mexico and Central America. The objective of the present study was to obtain ecological information on T. dimidiata in two rural communities of Campeche, Mexico, where the vector is poorly studied. Our work consisted of monthly samplings carried out during one-year time at three levels: sylvatic, peridomestic and intradomestic, in order to estimate the population abundance of this species and its rate of infection with Trypanosoma cruzi. Triatoma dimidiata was the unique vector of this disease collected in San Juan Bautista Sakcabchen (SJBS) and Crucero San Luis (CSL). The total of 145 individuals were captured in SJBS; from these, 26.9%, 20% and 53.1% were collected in the sylvatic, peridomestic and intradomestic area, respectively. In CSL captures yielded 108 individuals: 40.7% in the sylvatic area, 20.4% peridomestic and 38.9% intradomestic. We found no correlation between climatic variables and population abundance of T. dimidiata. Dataset obtained suggests that individuals from the sylvatic area exhibit a high rate of natural infection by T. cruzi, with monthly percentages up to 61.5% for SJBS and 50% for CSL. At the peri and intradomestic level, the reservoirs apparently play an important role in the transmission, as the seroprevalence in dogs was 61.5% y 65.4%, for SJBS y CSL, respectively. Based on these fi ndings, it was concluded that inhabitants of both communities are at a high risk of Chagas disease infection.

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Section: Discussionunclassified

Indicadores de infestación, colonización e infección de Triatoma dimidiata (Latreille) (Hemiptera: Reduviidae) en Campeche, México

Hernández¹,

Rebollar-Téllez²,

Infante³

et al. 2010

Neotrop. entomol.

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“…Una de ellas, realizada en aldeas de Jutiapa Guatemala, implementó un enfoque ecosistémico con intervención, centrado en aspectos materiales y culturales, donde las comunidades reconocieron que con mejoras en viviendas había menos riesgo de infección por la enfermedad de Chagas (18,19).…”

Section: Discussionunclassified

Hacia una vivienda indígena que limite la infestación doméstica por Triatoma infestans

Arrom

Suhurt

Gómez

et al. 2017

Rev. Fac. Cienc. Salud UDES

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ResumenIntroducción: El Estado Paraguayo tiene una deuda pendiente con los indígenas en políticas públicas de combate a la pobreza extrema, a la que se suma los problemas graves de salud, como la enfermedad de Chagas cuyo vector es el Triatoma infestans. Objetivo: Determinar las características de una vivienda mejorada que limite la infestación doméstica por Triatoma infestans desde la perspectiva de los pobladores indígenas. Metodología: Se realizó un estudio descriptivo con enfoque cuantitativo y cualitativo. Los instrumentos de recolección de datos fueron: encuesta de hogares, grupos focales, y entrevistas en profundidad a actores clave. Resultados: Fueron encuestados los jefes de hogares de 270 viviendas, de las cuales el 85% (230) tenía materiales no resistentes ni sólidos o de desecho al menos en uno de los componentes o en todos. El 86,3% (233) de los jefes y jefas de hogar manifestó querer mejorarlas, y la falta de ingresos suficientes al hogar puede considerarse la principal limitante para ello. Conclusiones: Al proyectar en forma gráfica las viviendas mejoradas o ideales, desde su perspectiva, las familias indígenas estudiadas mostraron que las viviendas de los menonitas y las de aquellos llamados paraguayos (población paraguaya no indígena que habita la zona) reunían las características físicas que limitaban el hospedaje al vector y se adecuaban al medio ambiente.Palabras clave: Triatoma infestans; Reinfestación; Vivienda; Enfermedad de Chagas (Fuente: DeCS BIREME). Abstract Introduction:The Paraguayan State has a pending debt with indigenous people regarding public policies to combat extreme poverty, in addition to serious health problems, such as Chagas disease with Triatoma infestans as its vector. Objective: To determine the characteristics of an improved dwelling that limits the domestic infestation by Triatoma infestans from the indigenous perspective. Methodology: A descriptive study with a quantitative and qualitative approach was conducted. The instruments of data collection were: household survey, focus groups, and in-depth interviews with key actors. Results: Household heads of 270 dwelling were surveyed, of which 85% (230) had nonresistant or solid or waste materials in at least one of the components or at all. 86.3% (233) of the heads of household indicated that they wanted to improve them, and the lack of sufficient income for the household could be considered the main limitation. Conclusions: When projecting graphically the ideal or improved housing, from their perspective, the studied indigenous families showed that the housing of the Mennonites and the so-called Paraguayans (non-indigenous Paraguayan population inhabiting the same area) gathered the physical characteristics that set the boundaries to limit the accommodation of the vector, and were adequate for the environment.

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“…Apart from chemical control with insecticide, populations of T. dimidiata could be influenced by improvements in housing or by climate events, such as hurricanes. 28,29 However, no such large-scale socioeconomic or environmental changes were seen during 2010-2014. To the best of our knowledge, the insecticide spraying program was the only intervention during this period that could contribute widely to the large reduction in domestic populations of T. dimidiata.…”

Section: Discussionmentioning

confidence: 99%

Effectiveness of Large-Scale Chagas Disease Vector Control Program in Nicaragua by Residual Insecticide Spraying Against Triatoma dimidiata

Yoshioka¹,

Nakamura²,

Pérez³

et al. 2015

The American Journal of Tropical Medicine and Hygiene

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Abstract. Chagas disease is one of the most serious health problems in Latin America. Because the disease is transmitted mainly by triatomine vectors, a three-phase vector control strategy was used to reduce its vector-borne transmission. In Nicaragua, we implemented an indoor insecticide spraying program in five northern departments to reduce house infestation by Triatoma dimidiata. The spraying program was performed in two rounds. After each round, we conducted entomological evaluation to compare the vector infestation level before and after spraying. A total of 66,200 and 44,683 houses were sprayed in the first and second spraying rounds, respectively. The entomological evaluation showed that the proportion of houses infested by T. dimidiata was reduced from 17.0% to 3.0% after the first spraying, which was statistically significant (P < 0.0001). However, the second spraying round did not demonstrate clear effectiveness. Space-time analysis revealed that reinfestation of T. dimidiata is more likely to occur in clusters where the pre-spray infestation level is high. Here we discuss how large-scale insecticide spraying is neither effective nor affordable when T. dimidiata is widely distributed at low infestation levels. Further challenges involve research on T. dimidiata reinfestation, diversification of vector control strategies, and implementation of sustainable vector surveillance.

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House improvements and community participation in the control of Triatoma dimidiata re-infestation in Jutiapa, Guatemala

Abstract: House improvements and community participation in the control of Triatoma dimidiata re-infestation in Jutiapa, GuatemalaMelhorias habitacionais com participação comunitária no controle da re-infestação por Triatoma dimidiata em Jutiapa, Guatemala

Cited by 72 publications

References 19 publications

Indicadores de infestación, colonización e infección de Triatoma dimidiata (Latreille) (Hemiptera: Reduviidae) en Campeche, México

Indicadores de infestación, colonización e infección de Triatoma dimidiata (Latreille) (Hemiptera: Reduviidae) en Campeche, México

Hacia una vivienda indígena que limite la infestación doméstica por Triatoma infestans

Effectiveness of Large-Scale Chagas Disease Vector Control Program in Nicaragua by Residual Insecticide Spraying Against Triatoma dimidiata

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