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Bogotá, Colombia

Rojas L.J.,University of Los Andes, Colombia | Jaramillo C.A.,University of Los Andes, Colombia | Mojica M.F.,University of Los Andes, Colombia | Escalante M.P.,Laboratorio Of Salud Publica | Delgado P.,University of Los Andes, Colombia
Epidemiology and Infection | Year: 2012

Human adenoviruses (HAdV) cause a broad spectrum of diseases including acute respiratory infection (ARI), and are responsible for 5% of cases requiring hospitalization in children aged <5 years in Colombia; however, little is known about the circulating types, partly due to the lack of reliable typing tests. In order to evaluate a VA gene PCR-sequencing approach for identification of HAdV circulating types in a Colombian population, 52 nasopharyngeal aspirates/swabs from children with ARI were processed. After a BLAST analysis, matches with species B (41/48, 8542%), C (6/48, 125%), and D (1/48, 208%) were found; and at the type level, type 3 (22/48, 4583%) was the most frequent. This initial effort to expand our knowledge about the molecular epidemiology of HAdV circulating in Bogota, Colombia, showed that HAdV-B was the predominant circulating species in the study period and reports, for the first time in Colombia, the presence of HAdV-D in a respiratory sample. © Copyright Cambridge University Press 2011. Source

Patino Reyes N.,National University of Colombia | Duarte Portocarrero E.,Laboratorio Of Salud Publica
One Century of the Discovery of Arsenicosis in Latin America (1914-2014): As 2014 - Proceedings of the 5th International Congress on Arsenic in the Environment | Year: 2014

In Bogota, Colombia, the District Department of Health ensures potable water consumption, and performs special tests for arsenic and mercury in rural aqueducts in the periphery of the city. These elements are important chemical parameters to monitor the quality of drinking water in the water supply network of the city. We analyzed 319 samples during the last half of 2010 and the first half of 2011 as a requirement of the Regulation 1575 of 2007. In the 99.38% of the samples, arsenic was no detectable, and the remaining 0.62% was below the reference value (0.01 mg L-1). Regarding to mercury, out of 319 water samples that were analyzed, in 274 (85%) the element was not detectable, and in 45 (15%) results were close to the reference value. In conclusion, the water samples analyzed for mercury and arsenic in 2010 and 2011 yielded no detectable levels that may affect the health of the population in Bogotá. © 2014 Taylor & Francis Group. Source

Villar-Vidal M.,Biodonostia Institute | Lertxundi A.,Biodonostia Institute | Lertxundi A.,University of the Basque Country | Martinez Lopez de Dicastillo M.D.,Biodonostia Institute | And 9 more authors.
Chemosphere | Year: 2014

Health studies and more specifically epidemiological studies require an extended analysis of the physical and chemical characteristics of the environment in which are held. The aim of this study is to evaluate the concentration of six Polycyclic Aromatic Hydrocarbons (PAHs) in PM2.5 fraction of air in a peri-urban environment in the province of Gipuzkoa (Basque Country, Spain) where residential areas are surrounded by industrial activity. The six studied PAH are as follows: Fluoranthene, Benzo(b)fluoranthene, Benzo(k)fluoranthene, (Benzo(a)pyrene, Indene(123-cd)pyrene and Benzo(ghi)perylene. Our six-year study shows a decrease in PAH concentrations between 2006 and 2011, especially since 2008 due to the fall in industrial activity and related traffic. Overall, 801 data were obtained. Total PAH concentration ranged between 0.3 and 8.29ngm-3 and Benzo(a)pyrene (BaP) from 0.05 to 0.88ngm-3. The mean value for BaP in PM2.5 was 0.15ngm-3 and the target value established by European legislation in PM10 was only exceeded in occasional days.Contribution percentages of each PAH in the monitoring sites were very similar, indicating common sources. The results of this study suggest that emission from industry play an important role although we also have to consider the contribution of traffic. PAH seasonal variations are similar as those reported in many previous studies. BaP and PAH concentration values in our region of study were in the range of other Spanish cities. © 2013 Elsevier Ltd. Source

Gonzalez-Parra G.,University of Los Andes, Venezuela | Arenas A.J.,University of Cordoba, Colombia | Aranda D.F.,Laboratorio Of Salud Publica | Segovia L.,Coordinacion de Epidemiologia de la Corporacion de Salud
Spatial and Spatio-temporal Epidemiology | Year: 2011

The 2009 swine flu pandemic was a global outbreak of a new strain of H1N1 influenza virus and there are more than 14,000 confirmed deaths worldwide. The aim of this paper is to propose new mathematical models to study different dynamics of H1N1 influenza virus spread in selected regions around the world. Spatial and temporal elements are included in these models to reproduce the dynamics of AH1N1/09 virus. Different models are used since H1N1 influenza virus spread in regions with different contact structures are not the same. We rely on time series notifications of individuals to estimate some of the parameters of the models. We find that, in order to reproduce the time series data and the spread of the disease, it is convenient to suggest spatio-temporal models. Regions with only one wave are modeled with the classical SEIR model and regions with multiple waves using models with spatio-temporal elements. These results help to explain and understand about potential mechanisms behind the spread of AH1N1 influenza virus in different regions around the world. © 2011 Elsevier Ltd. Source

Maestre-Serrano R.,Laboratorio Of Salud Publica | Maestre-Serrano R.,Simon Bolivar University of Colombia | Eyes-Escalante M.,University of the Atlantic
Boletin de Malariologia y Salud Ambiental | Year: 2012

The department of Atlántico in Colombia is considered non-endemic for Chagas disease, however there are risk factors associated with the presence of vector species. According to the last record of distribution of triatomine species in Colombia, this department only reported the presence of Triatoma maculata. The objective of this article a is to update the presence and distribution of triatomine species in urban and rural areas in Atlántico-Colombia. A retrospective study was performed based on Atlántico's records of triatomines between the years 2003 to 2010. During the period studied the following species were recorded: Panstrongylus geniculatus in the municipalities of Piojó, Tubará, Puerto Colombia, Barranquilla, Soledad and Luruaco; Eratyrus cuspidatus in the municipalities of Piojó and Tubará and T. maculata in Puerto Colombia. These results broaden the distribution of triatomines in Atlántico department and Colombian Caribbean region. Source

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