Parasitosis intestinales en Argentina: principales agentes causales encontrados en la población y en el ambiente
01 Jul 2013-Revista Argentina De Microbiologia (Asociación Argentina de Microbiología)-Vol. 45, Iss: 3, pp 191-204
TL;DR: Juarez et al. as discussed by the authors present a study of the impact of the use of artificial intelligence on the development of the industrial quimica in the context of the CONICET project.
Abstract: Fil: Juarez, Maria Mercedes. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico - CONICET - Salta. Instituto de Invest.para la Industria Quimica (i); Argentina;
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TL;DR: In this paper, Sorensen et al. determined the distribution of parasitosis in ninos of nueve provincias representativas del mosaico de ambientes contrastantes of Argentina.
Abstract: RESUMEN Objetivo Determinar la distribucion de las enteroparasitosis en ninos de nueve provincias representativas del mosaico de ambientes contrastantes de Argentina. Metodos Estudio descriptivo, observacional y transversal en ninos preescolares (de 5 anos o menos) y escolares (de 6 a 14 anos) de las provincias de Buenos Aires (muestra tomada entre 2005 y 2013), Chubut (2010-2013), Corrientes (2012), Entre Rios (2010-2012), Formosa (2014), La Pampa (2006), Mendoza (2008-2011), Misiones (2005-2008 y 2013) y Salta (2012-2013). Se procesaron muestras seriadas, fecales y de escobillado anal, mediante tecnicas de concentracion. Los resultados se analizaron por sexo, intervalo de edad y provincia. Se calcularon la frecuencia de parasitosis (monoparasitosis y parasitosis multiple), la riqueza de especies y el coeficiente de similitud de Sorensen. Resultados Misiones presento la mayor frecuencia de ninos parasitados y Chubut la menor (82,0% vs. 38,4%; p ˂ 0,01). El numero de especies fue mayor en Misiones y Buenos Aires y menor en Chubut y La Pampa. Los varones estuvieron mas parasitados que las mujeres solo en Buenos Aires. Las mayores frecuencias se encontraron en los preescolares de Buenos Aires y los escolares de Mendoza y Misiones (p < 0,05). La monoparasitosis fue mas frecuente en Chubut (67,9%) y las parasitosis multiples en Formosa (69,2%). Las especies mas frecuentes en la mayoria de las provincias fueron Blastocystis sp. y Enterobius vermicularis. De los geohelmintos, Misiones presento la mayor frecuencia (23,3%) y Mendoza la menor (0,6%); no se hallaron en Chubut, La Pampa y Salta. Buenos Aires, Formosa y Misiones presentaron una composicion de especies similar, al igual que Chubut y La Pampa. Conclusiones Las frecuencias de parasitosis en Argentina responden al complejo mosaico de variabilidad climatica y socioeconomica del pais y revelan una tendencia descendente de norte a sur y de este a oeste.
24 citations
Cites background from "Parasitosis intestinales en Argenti..."
...En Argentina, tanto la prevalencia de enteroparasitosis como el espectro de especies predominantes varían considerablemente de una localidad a otra (12, 13); se han registrado prevalencias por encima de 80% en el norte y el sur del país (14-18), mientras que en la zona central los valores se sitúan entre 40% y 70% (19-21)....
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...Argentina presenta una gran diversidad de suelos y condiciones climáticas y, en este escenario, es posible hallar parásitos que requieren condiciones muy diversas para su transmisión (12)....
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...En este estudio se halló una gran variedad de combinaciones de protozoos patógenos y comensales, probablemente porque comparten la misma vía de transmisión y su presencia se ve favorecida por factores higiénico-sanitarios deficientes, entre ellos el consumo de agua y alimentos contaminados con materia fecal, las características de los suelos y la insuficiente higiene personal (12, 31)....
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...En los últimos años, la globalización y las migraciones humanas desde regiones endémicas han favorecido la dispersión de ciertas parasitosis, fenómeno potenciado por determinadas condiciones ambientales y económicas y las deficientes prácticas sanitarias (12)....
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TL;DR: The results obtained show the existence of a worrying epidemiological scenario that stresses the importance of zoonotic parasitosis as a serious problem of public health.
Abstract: Summary
A cross-sectional study was performed between school term dates 2014 and 2015 to diagnose intestinal parasites in dogs and children living with them. The socio-environmental characteristics and hygiene practices of the children were also evaluated in terms of risk factors for parasitic infection of periurban neighbourhoods of La Plata (Buenos Aires, Argentina). Serial coproparasitological samples of 78 dogs and 211 children were analysed by means of concentration and flotation techniques. Socio-environmental variables and hygiene practices of children were evaluated through semi-structured questionnaires which were answered by every family. The study showed that 82.1% of dogs were parasitized. The specific richness was of 11 species; Ancylostoma caninum (69.2%), Uncinaria stenocephala (41.0%), Trichuris vulpis (28.2%) and Toxocara canis (21.8%) were the most prevalent. The study also revealed that 67.8% of children were positive. Also, 11 species were identified and the most prevalent were Blastocystis sp. (36.0%), Enterobius vermicularis (27.5%) and Giardia lamblia (21.3%). The risk for parasitosis was higher in 6-year-old children and older (OR = 1.9, 95% IC: 1.0–3.7) and in those who did not wash their hands or did it occasionally after playing with their pets (OR = 2.8, 95% IC: 1.4–5.5). Blastocystis sp. and Entamoeba coli infection risks were greater in children whose parents had a basic level of education (OR = 3.4, 95% IC: 1.3–8.7 and OR = 3.6, 95% IC: 0.8–15.9, respectively). In addition, the risk of infection for E. coli was higher in children who lived in floodable houses (OR = 4.4, 95% IC: 0.9–16.6). Likewise, the risk of infection for E. vermicularis was greater in children with onychophagia (OR = 1.6, 95% IC: 0.7–3.7) and in 6 year olds and older whose parents completed only primary studies (OR = 3.6, 95% IC: 1.4–9.1). The results obtained show the existence of a worrying epidemiological scenario that stresses the importance of zoonotic parasitosis as a serious problem of public health.
23 citations
Cites background from "Parasitosis intestinales en Argenti..."
...Specific richness was 11, and the most prevalent species were Blastocystis sp., E. vermicularis and G. lamblia, according to other studies in different localities (Cañete et al., 2012; Garraza, Zonta, Oyhenart, & Navone, 2014; Juárez & Rajal, 2013; Socías et al., 2014)....
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TL;DR: The aim was to analyze the socio‐environmental variables associated with malnutrition and intestinal parasitoses in children from Aristóbulo del Valle, Province of Misiones (Argentina).
Abstract: Fil: Zonta, Maria Lorena. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico la Plata. Centro de Estudios Parasitologicos y de Vectores (i); Argentina. Universidad Nacional de La Plata; Argentina
19 citations
TL;DR: A qualidade das aguas e caracterizada por parâmetros fisicos, quimicos e microbiologicos, os quais sao submetidos constantemente a interferencias de ordem natural, do proprio ecossistema, e of ordem antropica, advindas das atividades de uso e ocupacao do solo.
Abstract: A qualidade das aguas e caracterizada por parâmetros fisicos, quimicos e microbiologicos, os quais sao submetidos constantemente a interferencias de ordem natural, do proprio ecossistema, e de ordem antropica, advindas das atividades de uso e ocupacao do solo. No Estado do Rio Grande do Norte, Brasil, a melhoria da qualidade das aguas exige atencao, tendo em vista que a regiao perde parte significativa de suas aguas pelas altas taxas de evaporacao. A cidade de Portalegre apresenta um conjunto paisagistico formado por nascentes perenes, brejos de altitude e cachoeiras. Considerando as caracteristicas do local, este trabalho caracterizou a qualidade hidrica do Riacho da Bica que percorre a area de microbacia que se encontra na vertente norte do municipio e e bastante procurado para fins de recreacao de contato primario. O objetivo da pesquisa foi a analise do Indice de Qualidade das Aguas (IQA) em tres pontos do Riacho da Bica e a analise da balneabilidade na Cachoeira do Pinga, frequentemente usada por banhistas. Os resultados mostram que a qualidade das aguas e melhor na nascente do Riacho da Bica em que o IQA foi classificado como "regular". Os demais pontos do riacho foram classificados como "ruim". A balneabilidade das aguas da Cachoeira do Pinga foi classificada como excelente.
16 citations
TL;DR: Kim et al. as discussed by the authors evaluated the genetic diversity and zoonotic potential of Blastocystis using pig fecal samples and found that the infection rates were significantly related to age and region.
Abstract: Blastocystis is one of the most commonly detected genera of protozoan parasites in the human intestines as well as the intestines of many other species such as pigs in several geographical regions worldwide. However, no studies have examined Blastocystis in pigs in Korea. In this study, PCR and nucleotide sequencing were performed to evaluate the genetic diversity and zoonotic potential of Blastocystis using pig fecal samples. We obtained 646 stool samples from groups of piglets, weaners, growers, finishers, and sows in Korea. A total of 390 Blastocystis-positive samples were identified, and the infection rate was 60.4%. The infection rates were significantly related to age and region. The 4 subtypes (STs) of Blastocystis confirmed by phylogenetic analysis were ST1, ST2, ST3, and ST5, indicating the high genetic diversity of Blastocystis in Korean pigs. ST5 was highly distributed in Korean pigs among detected STs in this study. Some sequences were closely related to those of Blastocystis isolated from humans. This is the first study of Blastocystis in pigs in Korea. Based on the results, Blastocystis is prevalent in Korean pigs. Although a small number of samples were obtained in some areas, the clinical development of Blastocystis infection in pigs and potential for human transmission should be further examined.
15 citations
References
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TL;DR: This massive outbreak of watery diarrhea among the residents of Milwaukee was caused by cryptosporidium oocysts that passed through the filtration system of one of the city's water-treatment plants, and water-quality standards and the testing of patients for cryptOSporidium were not adequate to detect this outbreak.
Abstract: Background Early in the spring of 1993 there was a widespread outbreak of acute watery diarrhea among the residents of Milwaukee. Methods We investigated the two Milwaukee water-treatment plants, gathered data from clinical laboratories on the results of tests for enteric pathogens, and examined ice made during the time of the outbreak for cryptosporidium oocysts. We surveyed residents with confirmed cryptosporidium infection and a sample of those with acute watery diarrhea consistent with cryptosporidium infection. To estimate the magnitude of the outbreak, we also conducted a survey using randomly selected telephone numbers in Milwaukee and four surrounding counties. Results There were marked increases in the turbidity of treated water at the city's southern water-treatment plant from March 23 until April 9, when the plant was shut down. Cryptosporidium oocysts were identified in water from ice made in southern Milwaukee during these weeks. The rates of isolation of other enteric pathogens remained stab...
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Book•
01 Jan 2008
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TL;DR: The current state of knowledge of Giardia and Cryptosporidium is summarized here, and some important questions are raised that need to be addressed if control strategies are to be effective.
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TL;DR: This review presents information about the individual amoebae: their morphologies and life-cycles, laboratory cultivation, ecology, epidemiology, nature of the infections and appropriate antimicrobial therapies, the immune response, and molecular diagnostic procedures that have been developed for identification of the amoEBae in the environment and in clinical specimens.
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TL;DR: Reports of outbreaks of cryptosporidiosis related to drinking water in North America, the UK, and Japan, where detection methods are in place, indicate that water is a major vehicle for transmission of Cryptosporidium.
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