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Colombia

Integrating knowledge and management regarding the climate–malaria linkages in Colombia

February 1, 2012 - 14:57 -- Patrick Sampao
Author(s): 
Germán Poveda, Óscar A Estrada-Restrepo, Julián E Morales, Ólver O Hernández, Armando Galeano, Salua Osorio
Reference: 
Current Opinion in Environmental Sustainability, Volume 3, Issue 6, December 2011, Pages 448–460

MalariaWorldWe discuss how these research results and diverse knowledge-based tools, including mathematical explanatory models and geographical information systems, are being used by the Colombian health authorities as an end-to-end program and early warning system (EWS) for malaria prevention and surveillance countrywide.

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Open Access | Congenital malaria in Uraba, Colombia

August 19, 2011 - 08:34 -- Patrick Sampao
Author(s): 
Pineros-Jimenez JG, Alvarez G, Tobon A, Arboleda M, Carrero S, Blair S
Reference: 
Malaria Journal 2011, 10:239 (16 August 2011)

The aim of the study was to measure the prevalence of congenital malaria in an endemic Colombian region and to determine some of its characteristics.

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Diagnosis of Gestational, Congenital, and Placental Malaria in Colombia: Comparison of the Efficacy of Microscopy, Nested Polymerase Chain Reaction, and Histopathology

June 2, 2011 - 14:56 -- Patrick Sampao
Author(s): 
Ivón M. Campos, Mary L. Uribe, Carolina Cuesta, Alexander Franco-Gallego, Jaime Carmona-Fonseca, and Amanda Maestre
Reference: 
Am J Trop Med Hyg 2011 84:929-935

We designed a study to compare the technical and the operational-economical performances of light microscopy (LM), nested polymerase chain reaction (nPCR), and histopathology (HP).

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Evaluation of a PCR–RFLP–ITS2 assay for discrimination of Anopheles species in northern and western Colombia

May 4, 2011 - 11:53 -- Kabogo Ndegwa
Author(s): 
Astrid V. Cienfuegos, Doris A. Rosero, Nelson Naranjo, Shirley Luckhart, Jan E. Conn, Margarita M. Correa
Reference: 
Acta Tropica, Volume 118, Issue 2, May 2011, Pages 128-135

Anopheles mosquitoes are routinely identified using morphological characters of the female that often lead to misidentification due to interspecies similarity and intraspecies variability.

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Brief report: Large Variation in Detection of Histidine-Rich Protein 2 in Plasmodium falciparum Isolates from Colombia

October 5, 2010 - 09:01 -- Patrick Sampao
Author(s): 
Zuleima Pava, Diego F. Echeverry, Gustavo Díaz, AND Claribel Murillo
Reference: 
Am J Trop Med Hyg, Oct 2010; 83: 834 - 837.

To determine possible geographic differences and their effects on the performance of RDTs, 22 blood samples from patients with P. falciparum malaria from Tumaco and Buenaventura, Colombia were assessed by measurement of HRP2 concentration by an HRP2 enzyme-linked immunosorbent assay, RDTs, and thick blood smear.

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

September 3, 2010 - 08:01 -- Patrick Sampao
Author(s): 
Helena Brochero, Cong Li, Richard Wilkerson, Jan E. Conn, AND Manuel Ruiz-García
Reference: 
Am. J. Trop. Med. Hyg., 83(3), 2010, pp. 585-595

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 (FST = 0.069).

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Dynamics of Plasmodium falciparum Parasitemia Regarding Combined Treatment Regimens for Acute Uncomplicated Malaria, Antioquia, Colombia

July 5, 2010 - 06:49 -- Patrick Sampao
Author(s): 
Gonzalo Álvarez, Alberto Tobón, Juan-Gabriel Piñeros, Alexandra Ríos, AND Silvia Blair
Reference: 
Am J Trop Med Hyg, Jul 2010; 83: 90 - 96.

Sexual and asexual parasite dynamics were thus evaluated in patients involved in antimalarial drug efficacy studies by using combined treatment with and without artemisinin derivatives for treating uncomplicated acute Plasmodium falciparum malaria in Antioquia, Colombia.

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Microgeographic Genetic Variation of the Malaria Vector Anopheles darlingi Root (Diptera: Culicidae) from Córdoba and Antioquia, Colombia

July 2, 2010 - 13:16 -- Patrick Sampao
Author(s): 
Lina A. Gutiérrez, Giovan F. Gómez, John J. González, Martha I. Castro, Shirley Luckhart, Jan E. Conn, AND Margarita M. Correa
Reference: 
Am J Trop Med Hyg, Jul 2010; 83: 38 - 47.

This study was conducted to test genetic variation of An. darlingi at a microgeographic scale (approximately 100 km) from localities in Córdoba and Antioquia states, in western Colombia, to better understand the potential contribution of population genetics to local malaria control programs.

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Short Communication: Near-fixation of a Pfmsp1 block 2 allelic variant in genetically diverse Plasmodium falciparum populations across Western Colombia

March 5, 2010 - 11:07 -- Kabogo Ndegwa
Author(s): 
Judy Natalia Jiménez, Georges Snounou, Frank Letourneur, Laurent Rénia, Iván D. Vélez, Carlos E. Muskus
Reference: 
Acta Tropica, Volume 114, Issue 1, April 2010, Pages 67-70

Assessment of the genetic diversity of Plasmodium falciparum in 110 Colombian isolates revealed that nearly all the parasites in the 97 isolates collected in endemic regions west of the Andes shared the same Pfmsp1 block 2 MAD20-type allelic variant, despite showing high diversity for other genetical markers.

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Relation between vitamin B12 and folate status, and hemoglobin concentration and parasitemia during acute malaria infections in Colombia

March 5, 2010 - 09:30 -- Kabogo Ndegwa
Author(s): 
Olga Caicedo, Eduardo Villamor, Yibby Forero, José Ziade, Pilar Pérez, Francisco Quiñones, Myriam Arévalo-Herrera, Sócrates Herrera
Reference: 
Acta Tropica, Volume 114, Issue 1, April 2010, Pages 17-21

Since micronutrient deficiencies are highly prevalent in malaria-endemic areas and appear to contribute to anemia etiology, we conducted a cross-sectional study in Tumaco, Colombia, to examine the associations between plasma vitamin B12 or erythrocyte folate concentrations and hemoglobin (Hb) among 96 adults with predominantly Plasmodium falciparum malaria. 

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