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Search Results: 1 - 10 of 206090 matches for " Adolfo Enrique;Salomón "
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Lutzomyia longipalpis behavior and control at an urban visceral leishmaniasis focus in Argentina
Santini, Maria Soledad;Salomón, Oscar Daniel;Acardi, Soraya Alejandra;Sandoval, Enrique Adolfo;Tartaglino, Lilian;
Revista do Instituto de Medicina Tropical de S?o Paulo , 2010, DOI: 10.1590/S0036-46652010000400004
Abstract: during the earlier stages of visceral leishmaniasis transmission in posadas city, misiones, both the night activity and attraction to humans of lutzomyia longipalpis were assessed, in order to provide preliminary recommendations. the impact of peridomestic deltamethrin spraying performed by local officials was also evaluated. although lu. longipalpis were found in traps located over a dog the entire night, 90% of the females were captured from 20.30h to 1.30h, and only landed on a human when he was at a distance of 1.5 m from the dog. peridomestic spraying of deltamethrin (25 mg/m2) reduced the sand fly capture up to seven days post-intervention without dispersion in the border of the sprayed areas. these results support the recommendations about time-space focus of the protection measures: first half of the night, in the backyard, with pets and domestic animals kept at least 5 m from humans. the deltamethrin as it was used did not seem very effective in this scenario; neither did the eventual use of bed nets, at least in adults, due to the place/hour of sand fly higher activity. this study strengthens the need for a multidisciplinary approach to develop prevention strategies based both on biological and anthropological studies.
Lutzomyia longipalpis abundance in the city of Posadas, northeastern Argentina: variations at different spatial scales
Santini, María Soledad;Fernández, María Soledad;Pérez, Adriana Alicia;Sandoval, Adolfo Enrique;Salomón, Oscar Daniel;
Memórias do Instituto Oswaldo Cruz , 2012, DOI: 10.1590/S0074-02762012000600010
Abstract: the distribution of lutzomyia longipalpis is heterogeneous with a pattern of high abundance areas (haas) embedded in a matrix of low abundance areas (laas). the objective of this study was to describe the variability in the abundance of lu. longipalpis at two different spatial levels and to analyse the relationship between the abundance and multiple environmental variables. of the environmental variables analysed in each household, the condition that best explained the differences in vector abundance between haa-laa was the variable "land_grass", with greater average values in the peridomestic environments within the laa, and the variables "#sp tree", "#pots" and "dist_water" that were higher in the haa. of the environmental variables analysed in the patches, the variable "unpaved_streets" was higher in the laas and the variable "prop_inf_dogs" was higher in the haas. an understanding of the main environmental variables that influence the vector distribution could contribute to the development of strategies for the prevention and control of visceral leishmaniasis (vl). this is the first work in which environmental variables are analysed at the micro-scale in urban areas at the southern edge of the current range of lu. longipalpis. our results represent a significant contribution to the understanding of the abundance of the vector in the peridomestic habitats of the region.
Leishmaniose cutanea no Norte da Argentina: fatores de risco identificados num estudo caso-coorte em três municípios de Salta
Sosa-Estani Sergio,Segura Elsa Leonor,Gomez Adolfo,Salomón Oscar Daniel
Revista da Sociedade Brasileira de Medicina Tropical , 2001,
Abstract: Este trabalho tem como objetivo avaliar fatores considerados de risco para adquirir leishmaniose cutanea em Salta, área de maior transmiss o da Argentina. Aplicou-se um estudo de caso-coorte com observa es entre junho de 1989 e dezembro de 1992. Aos casos e aos controles selecionados se realizou: a) um questionário sócio-demográfico; b) descri o das características da vivenda e peridomicílio; c) um exame físico de pele e mucosa nasal e bucal; d) intradermorrea o de Montenegro. A análise multivariada mostrou um risco significativo para fatores extradomiciliares (realizar atividades de vaqueira, dormir no lugar de trabalho, ir ca ar) e domiciliares (dormir fora do quarto, presen a de três ou mais suínos no quintal da casa e existência de janelas sem fechaduras). Esta associa o permitiu pela primeira vez em Salta (Argentina), identificar fatores de risco vinculados com a transmiss o de leishmaniose na unidade domiciliária.
Tegumentary leishmaniasis in Northern Argentina: distribution of infection and disease, in three municipalities of Salta, 1990-1992
Sosa-Estani Sergio,Segura Elsa Leonor,Salomón Oscar Daniel,Gómez Adolfo
Revista da Sociedade Brasileira de Medicina Tropical , 2000,
Abstract: This work describes the epidemiological pattern of tegumentary leishmaniasis in an area north of Salta, Argentina. The prevalence and incidence were estimated by means of a cross-sectional study and two follow-up studies during two consecutive years. The Montenegro Skin Test (MST) was administered to 7336 subjects at baseline. The prevalence and incidence between 1990 and 1992 of infection (MST reactive) was 38? persons and 4.5? persons/year respectively. The prevalence and incidence of tegumentary leishmaniasis (presence of clinical signs) was 1.8? and 0.8? persons/year, respectively. A physical examination performed on 264 patients with MST reactive during three years revealed that 130 cases (49.2%) had some evident sign of infection (scar and/or lesion), with a clinical presentation compatible with leishmaniasis. Our study demonstrated that after the epidemic outbreak of 1985 the transmission in the study area returned to endemic levels in 1992, and also demonstrated the presence of the asymptomatic infection in the area.
Diferencias regionales y Síndrome Pulmonar por Hantavirus (enfermedad emergente y tropical en Argentina)
Sosa-Estani Sergio,Salomón Oscar Daniel,Gómez Adolfo Orlando,Esquivel María Laura
Cadernos de Saúde Pública , 2001,
Abstract: Se describen algunos factores que habrían favorecido a caracterizar la expresión del Síndrome Pulmonar por Hantavirus en Argentina. Estos factores muestran diversos orígenes que van desde los procesos de ocupación del espacio y de producción, la estructura laboral, el patrón de migración humana, la etnia, la dinámica de reservorios y su relación con los tipos de virus, y el comportamiento del hombre. Estos factores se expresan en tres marcos ecológicos asociados a diferentes regiones geográficas de Argentina: 1) Noroeste, 2) Central (Pampa húmeda) y 3) Sur Andina. Este complejo escenario obliga a abordar con la misma complejidad las investigaciones, para identificar determinantes primarios, biológicos, sociales y ambientales, causales de salud o enfermedad en su estrecha interacción y no individualmente. Este abordaje permitirá dise ar estrategias apropiadas para mejorar las condiciones de salud. Las mismas deberían ser dise adas y transferidas por equipos transdisciplinarios de investigación, donde la participación de la comunidad desde las primeras etapas de desarrollo es esencial para la sustentabilidad de la estrategia.
Identification of the natural breeding sites of sandflies (Diptera: Psychodidae: Phlebotominae), potential vectors of leishmaniasis, in the province of Chaco, Argentina
Parras, Matías Ariel;Rosa, Juan Ramón;Szelag, Enrique Alejandro;Salomón, Oscar Daniel;
Memórias do Instituto Oswaldo Cruz , 2012, DOI: 10.1590/S0074-02762012000400018
Abstract: the aim of this work was to identify the natural breeding sites of sandflies in the province of chaco, argentina, for the first time. preliminary studies were conducted in two different phytogeographic regions: dry chaco (parque provincial pampa del indio), in january 2010, and humid chaco (resistencia, margarita belén and colonia benítez), from may-september 2010. a total of 127 samples were collected (pampa del indio: 15, resistencia: 37, margarita belén: 36, colonia benítez: 39). a female of migonemyia migonei was found in pampa del indio at the base of a bromeliad in the summer (january) and a pupal exuvium of a phlebotomine fly was found in resistencia, in a place where dogs rested, in the winter (july). these findings highlighted these two sites as potential breeding sites. because the existence of potential natural breeding sites for sandflies has been demonstrated in both forest and periurban areas, expanding the search efforts and characterising these sites will enable the development of specific study designs to gain insight into the spatial distribution of the risks posed by these vectors. the resulting information will serve as a basis for proposing and evaluating vector control measures.
Distribución de vectores de leishmaniasis visceral en la Provincia de Corrientes, 2008
Salomón,Oscar Daniel; Ramos,Ladys K.; Quintana,María Gabriela; Acardi,Soraya A.; Santini,María Soledad; Schneider,Adolfo;
Medicina (Buenos Aires) , 2009,
Abstract: visceral leishmaniasis (vl) is a relevant parasitic disease in public health, produced by leishmania infantum chagasi. since the urbanization and emergence in southern brazil and paraguay, the vector lutzomyia longipalpis in formosa, 2004, and the first human visceral leishmaniasis case in misiones, 2006, have been reported in argentina. due to the reports of canine vl, a search of the vector in the province of corrientes, contiguous to misiones, was performed during december 2008. standarized trapping detected 376 lu. longipalpis in ituzaingó, virasoro, santo tomé, garruchos, riachuelo, corrientes and monte caseros localities. the risk of autochtonous vectorial transmission was then confirmed in the province of corrientes. the distribution of vectors in populated urban areas, with intense transit of canine reservoirs from localities with high transmission, and the existence of infected reservoirs, also implies epidemic risk.
Diferencias regionales y Síndrome Pulmonar por Hantavirus (enfermedad emergente y tropical en Argentina)
Sosa-Estani, Sergio;Salomón, Oscar Daniel;Gómez, Adolfo Orlando;Esquivel, María Laura;Segura, Elsa Leonor;
Cadernos de Saúde Pública , 2001, DOI: 10.1590/S0102-311X2001000700013
Abstract: factors related to the characteristics of hantavirus pulmonary syndrome in argentina are described. factors from different scientific fields converge to form the syndrome's analytical framework. some of these factors are the history of spatial occupation, work and production structures, human migration patterns, ethnic composition, reservoir dynamics and its relationship to the different circulating viruses, and human behavior. furthermore, the multiple factors are expressed in three ecological frameworks, associated with three different geographical regions of argentina: 1) northwest; 2) central ("wet pampa"); and 3) south andean. in order to understand the actual causality of health or disease as an interaction of many factors, research on the primary biological, social, and environmental determinants of diseases should attend to the complexity of variable relationships in each region. the multiple-factor convergence approach allows for the design of appropriate strategies to improve the population's health status. therefore, strategies should be developed and transferred by multidisciplinary teams, while their sustainability should be assured by community participation beginning with the earliest steps of research onward.
Leishmaniose cutanea no Norte da Argentina: fatores de risco identificados num estudo caso-coorte em três municípios de Salta
Sosa-Estani, Sergio;Segura, Elsa Leonor;Gomez, Adolfo;Salomón, Oscar Daniel;Peralta, Mario;Coutada, Virgilio;Ruiz, Luis Medina;
Revista da Sociedade Brasileira de Medicina Tropical , 2001, DOI: 10.1590/S0037-86822001000600003
Abstract: the objective of this work was evaluate risk factors for acquiring cutaneous leishmaniasis in salta, the region with the greatest indices of transmission in argentina. a case-cohort study was realized from june 1989 to december 1992. the procedures performed on cases and controls included: a) socio-demographic questionnaire; b) domestic and peridomestic environment description; c) physical exam of skin and nasal and oral mucosal; d) montenegro skin test. multivariate analysis showed a significant risk for factors outside the home (cattle management, hunting, sleeping at the work place) and while at home (sleeping outside of the bedroom, presence of three or more pigs in the yard and windows that cannot be locked in the closed position). this association allowed the identification of risk factors linked to the transmission of leishmaniasis in the home for the first time in salta (argentina).
El parlamento espa ol en la VII legislatura: una deriva negativa
Enrique Guerrero Salom
Circunstancia , 2004,
Abstract:
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