Chagas Disease Vector Control in Tupiza, Southern Bolivia

Guillén, Gilberto; Díaz, Ricardo Andrés Caicedo; Jemio, A; Cassab, J Alfred; Pinto, Cláudio Teixeira; Schofield, Claire

doi:10.1590/s0074-02761997000100001

Cited by 38 publications

(34 citation statements)

References 5 publications

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“…Especially over the last two decades, thatched roofs have tended to be replaced with roofs of tile or corrugated metal - although R. prolixus has been found in the walls of tin roofed houses in Honduras and Guatemala [54], and it has been demonstrated that house improvement alone is generally insufficient to eliminate domestic populations of Triatominae [e.g. [62]].…”

Section: Discussionmentioning

confidence: 99%

Elimination of Rhodnius prolixus in Central America

Hashimoto¹,

Schofield

2012

Parasites Vectors

124

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Rhodnius prolixus is one of the main vectors of Trypanosoma cruzi, causative agent of Chagas disease. In Central America, it was first discovered in 1915 in El Salvador, from where it spread northwest to Guatemala and Mexico, and southeast to Nicaragua and Costa Rica, arriving also in Honduras in the late 1950s. Indoor residual spraying (IRS) by the antimalaria services of Costa Rica prevented its spread southwards, and similar IRS programmes appear to have eliminated it from El Salvador by the late 1970s. In 1997, by resolution of the Ministers of Health of the seven Central American countries, a multinational initiative against Chagas disease (IPCA) was launched with one of the specific objectives being the elimination of R. prolixus from the region. As a result, more and more infested areas were encountered, and progressively sprayed using an IRS strategy already deployed against Triatoma infestans in the southern cone countries of South America. In 2008, Guatemala became the first of these countries to be formally certified as free of Chagas disease transmission due to R. prolixus. The other infested countries have since been similarly certified, and none of these has reported the presence of R. prolixus since June 2010. Further surveillance is required, but current evidence suggests that R. prolixus may now been eliminated from throughout the mesoamerican region, with a corresponding decline in the incidence of T. cruzi infections.

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Section: Discussionmentioning

confidence: 99%

Elimination of Rhodnius prolixus in Central America

Hashimoto¹,

Schofield

2012

Parasites Vectors

124

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“…Chagas disease is present in almost all the national territory of Bolivia, representing a serious public health problem [8][9][10][11] .…”

Section: Comunicação Saúde Educação 2018; 22(64):87-96mentioning

confidence: 99%

Migração boliviana e doença de Chagas: limites na atuação do Sistema Único de Saúde brasileiro (SUS)

Carneiro¹,

Silveira²,

Silva

et al. 2017

Interface (Botucatu)

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Migration provoke changes in epidemiological profiles impinging on the health care systems of reception countries. Immigrants come to Brazil from neighbor countries usually having precarious insertion in metropolitan areas. Chagas disease is endemic in Bolivia, something that has to be taken into account by the SUS. This paper analyzes both action and limits regarding health professionals who provide services to Bolivians in SUS with a focus on Chagas disease.Interviews were applied to primary, secondary and tertiary health services in the central region of São Paulo, the main destination of Bolivian immigrants. The precarious living conditions of Bolivians are the cause of health inequities. Language and culture also hamper their understanding about care. There is a lack of knowledge about clinic and epidemiology aspects of Chagas disease among the professionals who attend these immigrants. It is necessary to rethink strategies of health care and control of Chagas disease.

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“…En ausencia de una satisfactoria terapia o vacuna contra la enfermedad de Chagas, el control o la interrupción de la transmisión se realizan mediante el uso de insecticidas para la eliminación de poblaciones de triatominos en el domicilio y el peridomicilio (10). El control de vectores de la enfermedad de Chagas ha dependido desde el inicio y actualmente en toda Latinoamérica, principalmente de la aplicación de insecticidas.…”

Section: Actividad Tóxica De Insecticidas Piretroides En R Pallescensunclassified

Evaluación de la actividad tóxica de los insecticidas piretroides deltametrina y lambdacihalotrina en dos poblaciones de campo de Rhodnius pallescens (Hemíptera: Reduviidae) de Panamá

et al. 2011

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Introducción. La evaluación de la sensibilidad de las poblaciones de Rhodnius pallescens permite detectar y vigilar los grados de resistencia en el transcurso del tiempo, con el fin de evaluar los efectos de las estrategias de control y manejo de la resistencia. Objetivo. Determinar la línea base de sensibilidad de los principios activos deltametrina y lambdacihalotrina en ninfas de estadios I y V, en dos poblaciones de campo de R. pallescens. Materiales y métodos. Los bioensayos se realizaron tomando como referencia el protocolo estandarizado de aplicación tópica para R. prolixus y adaptado para R. pallescens. Resultados. Con la aplicación tópica del insecticida lambdacihalotrina en ninfas de estadio I en R. pallescens (Chilibre) y R. pallescens (Cerro Cama), los valores de la dosis letal 50 (DL 50 ) expresados en nanogramos por insecto fueron de DL 50 =0,129 y DL 50 =0,109, respectivamente. En ninfas de estadio V los valores fueron de DL 50 =1,712 y DL 50 =3,478, respectivamente. Por su parte, la aplicación tópica de deltametrina en ninfas de estadio I, registró valores de DL 50 =0,022 y DL 50 =0,021 y, en ninfas de estadio V, de DL 50 =2,110 y DL 50 =1,548. Conclusiones. En ninfas de estadios I y V de ambas poblaciones de R. pallescens, se observó mediante los valores obtenidos de factor de resistencia que no existen ninguna diferencia significativa en el efecto tóxico de los insecticidas estudiados. Esto permite establecer que las dos cepas de R. pallescens son sensibles a los insecticidas deltametrina y lambdacihalotrina.Palabras clave: Rhodnius, insecticidas/toxicidad, resistencia a los insecticidas, enfermedad de Chagas, Panamá.Evaluation of the toxic activity of the pyrethroid insecticides deltamethrin and lambdacyhalothrin in two Panamanian field populations of Rhodnius pallescens (Hemíptera: Reduviidae) Introduction. Systematic evaluation of the susceptibility of disease vectors to insecticides permits the detection of the development of insecticide resistance over time. This is necessary to evaluate the effectiveness of control methods and to plan management strategies of the resistance. Objective. The baseline susceptibility was determined for I and V instar nymphs of Rhodnius pallescens to the active ingredients of the insecticides deltamethrin and lambdacyhalothrin. Materials and methods. The bioassays were applied to two field populations of R. pallescens collected in Chilibre and Cerro Cama, Panamá. A standard protocol for topical application was adapted from that developed for Rhodnius prolixus. Bioassays were performed using topical applications on the dorsal abdominal surface, with volumes of 0.1 μl and 0.5 μl acetone solution of insecticide for nymphs of stage I and V respectively, using 5 μl and 25 μl Hamilton microsyringes with a repeating dispenser. Ten nymphs were used for each insecticide concentration. Results. With the topical application of lambdacyhalothrin on first-instar nymphs from Chilibre and Cerro Cama, the LD 50 values expressed in ng/insect were 0.13 and 0.11 respectively. In...

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Chagas Disease Vector Control in Tupiza, Southern Bolivia

Abstract: Heavy domestic andperidomestic infestations of

Cited by 38 publications

References 5 publications

Elimination of Rhodnius prolixus in Central America

Elimination of Rhodnius prolixus in Central America

Migração boliviana e doença de Chagas: limites na atuação do Sistema Único de Saúde brasileiro (SUS)

Evaluación de la actividad tóxica de los insecticidas piretroides deltametrina y lambdacihalotrina en dos poblaciones de campo de Rhodnius pallescens (Hemíptera: Reduviidae) de Panamá

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