Biting Activity and Breeding Sites of Anopheles Species in the Municipality Villavicencio, Meta, Colombia

Brochero, Helena; V, Gabriela Rey; Buitrago, Luz Stella; Olano, Víctor Alberto

doi:10.2987/8756-971x(2005)21[182:baabso]2.0.co;2

Cited by 43 publications

(69 citation statements)

References 2 publications

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“…De esta manera, los estanques de cría de peces constituyen uno de los principales criaderos en las tres ciudades (3,18,19), mientras que las excavaciones de minería son criaderos importantes en Quibdó y Buenaventura (3,18).…”

Section: Discussionunclassified

Epidemiología de malaria urbana en Quibdó, Chocó.

Ochoa

Osório

2006

biomedica

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Introducción. La malaria urbana es un problema de salud pública en Colombia y poco se conoce acerca de sus características epidemiológicas, las cuales es necesario conocer para la implementación de medidas de control. Objetivo. Determinar las características epidemiológicas de la malaria en el área urbana del municipio de Quibdó, Chocó. Materiales y métodos. Los casos de malaria diagnosticados en la ciudad de Quibdó entre marzo y julio del 2001 fueron clasificados como autóctonos e importados a partir de historias de viaje a áreas endémicas o lugar de residencia. Los casos autóctonos fueron ubicados en el mapa con el fin de identificar las zonas de riesgo a partir del cálculo de morbilidad estandarizada por edad y sexo. Resultados. Durante el periodo de estudio se incluyeron 839 casos de malaria: 77% por Plasmodium falciparum; 19% por Plasmodium vivax y 4% fueron infecciones por ambas especies. El 24,4% de los casos por P. falciparum y 39,1% de los casos de P. vivax se clasificó como autóctono. La zona de mayor riesgo de malaria se ubicó en los barrios del suroriente de la ciudad. Conclusiones. La transmisión de malaria es focalizada y las áreas de mayor riesgo de infección están ubicadas cerca de zonas con vegetación. La información obtenida en este estudio permite concentrar esfuerzos en las zonas de mayor riesgo y optimizar la utilización de recursos.Palabras clave: malaria/epidemiología, Plasmodium falciparum, Plasmodium vivax, asentamientos urbanos, Colombia. Epidemiology of urban malaria in Quibdo, Choco.Introduction. Although urban malaria is a public health problem in Colombia, little is known about its epidemiological characteristics, needed for the implementation of rational control strategies. Objective. To determine the epidemiological characteristics of malaria in the urban area of the municipality of Quibdó, in northwest Colombia. Materials and methods. Malaria cases diagnosed in the city of Quibdó between March and July, 2001 were classified as autochthonous or imported based on travel histories to endemic areas and place of residency. Autochthonous cases were mapped and risk areas identified using sex and age standardized morbidity ratios. Results. During the study period 839 malaria cases were included: 77% due to Plasmodium falciparum; 19% due to P. vivax and 4% infections due to both species. 24.4% of P. falciparum cases and 39.1% of P. vivax cases were classified as autochthonous. Those neighborhoods located in the southeast of the town showed the highest risk for malaria. Conclusion. As in other urban areas, malaria transmission in the city of Quibdo is focal and the areas with the highest risk are located near vegetation zones. These results are useful to prioritize areas for intervention and the allocation of resources.

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Section: Discussionunclassified

Epidemiología de malaria urbana en Quibdó, Chocó.

Ochoa

Osório

2006

biomedica

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“…marajoara was shown to be the most abundant and widely distributed anopheline in a lot of urban areas in Colombia, with an apparently high adaptation to human environments. 6 As such, it could be playing an important role as secondary malaria vector in some areas in Colombia and Brazil. 3,[6][7][8][9] In fact, in the Amapá state in northeastern Brazil, this was the primary malaria vector.…”

Section: Introductionmentioning

confidence: 99%

Genetic Structure of Anopheles (Nyssorhynchus) marajoara (Diptera: Culicidae) in Colombia

Brochero

Liu²,

Wilkerson³

et al. 2010

The American Society of Tropical Medicine and Hygiene

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Abstract. Five Anopheles marajoara Galvão and Damasceno populations, representing diverse ecological conditions, were sampled throughout Colombia and analyzed using nine hypervariable DNA microsatellite loci. The overall genetic diversity ( H = 0.58) was lower than that determined for some Brazilian populations using the same markers. The Caquetá population (Colombia) had the lowest gene diversity ( H = 0.48), and it was the only population at Hardy-Weinberg equilibrium. Hardy-Weinberg disequilibrium in the remaining four populations was probably caused by the Wahlund effect. The assignment analyses showed two incompletely isolated gene pools separated by the Eastern Andean cordillera. However, other possible geographical barriers (rivers and other mountains) did not play any role in the moderate genetic heterogeneity found among these populations ( F ST = 0.069). These results are noteworthy, because this species is a putative malaria vector in Colombia.

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“…darlingi. Se ha descrito cómo esta especie prefiere criaderos sombreados, de aguas limpias con corriente lenta (31). El no haber capturado especímenes de esta especie en los sitios estudiados en Cimitarra se podría explicar por el hecho de que los criaderos más abundantes y de mayor variabilidad de especies fueron los estanques de cría de peces.…”

Section: Resultsunclassified