Browsing by Author "Zeledón, Rodrigo"
Now showing items 1-14 of 14
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Atypical cutaneous leishmaniasis in a semiarid region of north-west Costa Rica
Zeledón, Rodrigo; Hidalgo, Harry; Viquez, Abel; Urbina, Andrea (Transactions of the Royal Society of Tropical Medicine and Hygiene, 1989)An outbreak of an unusual cutaneous disease was observed during 1986-1987 in about 200 persons, mainly children, in a few neighbourhoods of the town of Liberia, Guanacaste Province, north-west Costa Rica. Most of the ... -
Chagas disease in dogs from endemic areas of Costa Rica
Zeledón, Rodrigo; Montenegro Hidalgo, Victor Manuel; Jiménez Soto, Mauricio; Pinto Dias, JC (Memórias do Instituto Oswaldo Cruz, 2002-06)Dogs with the presumptive diagnosis of Chagas disease are commonly sent to our School of Veterinary Medicine by independent veterinarians. This prompted us to evaluate the prevalence of canine trypanosomiasis in some ... -
Distribution and ecological aspects of Rhodnius pallescens in Costa Rica and Nicaragua and their epidemiological implications
Zeledón, Rodrigo; Marín, Francisca; Calvo, Nidia; Lugo, Emperatriz; Valle, Sonia (Instituto Oswaldo Cruz, 2006)In light of the Central American Initiative for the control of Chagas disease, efforts were made on the part of Costa Rican and Nicaraguan teams, working separately, to determine the present status of Rhodnius pallescens ... -
Ecological control of Triatoma dimidiata (Latreille, 1811): five years after a Costa Rican pilot project
Zeledón, Rodrigo; Rojas, Julio C; Urbina, Andrea; Cordero, Marlen; Gamboa, Sue H; Lorosa, Elias S; Alfaro, Sergio (Instituto Oswaldo Cruz, 2008)An ecological pilot project for the control of Triatoma dimidiata allowed a new evaluation four and five years after environmental modifications in the peridomestic areas of 20 households. It was verified that the two ... -
Entomological and Ecological Aspects of Six Sylvatic Species of Triatomines (Hemiptera, Reduviidae) from the Collection of the National Biodiversity Institute of Costa Rica, Central America
Zeledón, Rodrigo; Ugalde, Jesús A; Paniagua, Luis A (Memórias do Instituto Oswaldo Cruz, 2001)A total of 797 specimens of wild adult triatomines, belonging to six species from the entomological collections of the Costa Rican National Biodiversity Institute, was studied from the standpoint of their relative ... -
Environmental management for the control of Triatoma dimidiata (Latreille, 1811), (Hemiptera: Reduviidae) in Costa Rica: a pilot project
Zeledón, Rodrigo; Rojas, Julio César (Memórias do Instituto Oswaldo Cruz, 2006-06)An ecological control method, using environmental management operations, based on biological and behavioral characteristics of Triatoma dimidiata (Latreille, 1811), was implemented as a pilot project in an area of Costa ... -
Epidemiological, social, and control determinants of Chagas disease in Central America and Mexico - Group discussion
Zeledón, Rodrigo; Ponce, Carlos; Méndez Galván, Jorge F (Memórias do Instituto Oswaldo Cruz, 2007)The existence of Chagas disease in Central America was reported for the first time in El Salvador in 1913, four years after its discovery in Brazil. At that time only Triatoma dimidiata was known as a vector, but two ... -
Evidence of colonization of man-made ecotopes by Triatoma dimidiata (Latreille, 1811) in Costa Rica
Zeledón, Rodrigo; Zeledón, Oswaldo; Montenegro Hidalgo, Victor Manuel (Memórias do Instituto Oswaldo Cruz, 2001-07)Triatoma dimidiata adults have been frequently found, during the last five years, in a dog kennel and a chicken coop, in the back yard of a well-built house, 15 km from San José, the capital of Costa Rica. In the chicken ... -
First report of Trypanosoma vivax infection in dairy cattle from Costa Rica
De Oliveira, Jaqueline B.; Hernández Gamboa, Jorge; Jiménez Alfaro, C.; Zeledón, Rodrigo; Blandón-Naranjo, Melissa; Urbina, Andrea (Elsevier, 2009)An outbreak of haemoparasitoses occurred from October 2007 to July 2008 in cattle from the district of Rio Cuarto, province of Alajuela, Costa Rica. Fifty animals of various ages out of 450 Brown Swiss were affected. The ... -
In vitro activity of thienyl-2-nitropropene compounds against Trypanosoma cruzi
Herrera, Cristina; Vallejos, Gabriel; Loaiza, Randall; Zeledón, Rodrigo; Urbina, Andrea; Sepúlveda-Boza, Silvia (Memórias do Instituto Oswaldo Cruz, 2009-11)The in vitro activity of four 2-nitropropene derivatives, 1-(3-benzothienyl)-2-nitropropene (N1), 1-(3-thienyl)-2- nitropropene (N2), 1-(5-bromo-2-thienyl)-2-nitropropene (N3) and 1-(4-bromo-2-thienyl)-2-nitropropene (N4), ... -
Life cycle of Triatoma ryckmani (Hemiptera: Reduviidae) in the laboratory, feeding patterns in nature and experimental infection with Trypanosoma cruzi
Zeledón, Rodrigo; Cordero, Marlen; Marroquín, Ricardo; Seixas Lorosa, Elias (Instituto Oswaldo Cruz, 2010-02)A cohort initiated with 121 eggs, yielding 105 first instar nymphs (eclosion rate: 86.78%), allowed us to observe the entire life cycle of Triatoma ryckmani under laboratory conditions (24ºC and 62% relative humidity), ... -
Molecular characterization of Trypanosoma cruzi and infection rate of the vector Triatoma dimidiate in Costa Rica
Zeledón, Rodrigo; Zuriaga, María Ángeles; Blandón-Naranjo, Melissa; Valerio-Campos, Idalia; Salas, Ruth; BARGUES, MARIA DOLORES (Universidad Nacional, Costa Rica, 2012-06-30)According to the genetic characterization by the analysis of the miniexon gene, strains of Trypanosoma cruzi can be classified into six discrete typing units (DTUs), and the DTU 1 into four distinct genotypes associated ... -
Molecular evidence of intraspecific variability in different habitat-related populations of Triatoma dimidiata (Hemiptera: Reduviidae) from Costa Rica
Blandón-Naranjo, Melissa; Ángeles Zuriaga, María; Azofeifa, Gabriela; Zeledón, Rodrigo; Dolores Bargues, María (Springer, 2010-02-18)Intraspecific genetic variation among Triatoma dimidiata (Hemiptera: Reduviidae) from seven Costa Rican populations and from different domestic, peridomestic, and sylvatic ecotopes were analyzed. The complete ... -
Morfologia externa de Triatoma ryckmani Zeledón & Ponce, 1972 vista através da microscopia eletrônica de Varredura
Carcavallo, Rodolfo U; Zeledón, Rodrigo; Jurberg, José; Galindez, Itamar (Memórias do Instituto Oswaldo Cruz, 1996-12)External Morphology of Triatoma rickmani Zeledón & Ponce, 1972 by Scanning Electron Mi croscopy - A male of Triatoma ryckmani Zeledón & Ponce, 1972, was studied by scanning electron microscopy. Only few specimens of this ...