"Portuguese Observatory of Taeniasis and Cysticercosis": A "One Health" example for epidemiological surveillance of one neglected disease in a European country

Cysticercosis results from the ingestion Taenia solium eggs directly by faecal-oral route or contaminated food or water. Human tapeworm carriers who have become infected after ingesting pork meat contaminated with cysticerci release these eggs. Cysticercosis occurs after tapeworm eggs are ingested by an intermediate host (pig or human) and then hatch, migrate, and lodge in the host's tissues, where they develop onto larval cysticerci. When they lodged in the central nervous system of humans, results in the disease condition called Neurocysticercosis (NCC), with a heterogeneous manifestations depending of the locations of cysts, number, size and their stage of evolution (1). Consequently the prognostic ranges from asymptomatic to situations leading to death in 2% to 9.8%. of cases (7) In swine’s there are few studies, but recent works have proved that animals, for the same reasons, also have neurological abnormalities, expressed by seizures, stereotypic walk in circles, chewing motions with foamy salivation included tonic muscle contractions followed by a sudden diminution in all muscle tone leading to collapse (2). Conventional domestic wastewater treatment processes may not be totally effective in inactivating parasites eggs from Taenia solium, allowing some contamination of soils and agricultural products (11). In Portugal there are some evidence of aggregation of human cysticercosis cases in specific regions, bases in ecological design studies (6). There are few information about human tapeworm carriers and social and economic factors associated with them. Success in knowledge and consequently in lowering transmission is limited by the complex network of biological and social factors that maintain the spread. Effective control of mostly zoonosis require One Health approach, after a real knowledge and transparency in the information provided by the institutions responsible for both animal and human health, allowing sustained interventions targeted at the transmission cycle's crucial nodes. In general, the model used to control, reflects a rural reality, where pigs are raised freely, poor sanitation conditions and incipient sanitary inspection. In cysticercosis, pigs are obligate intermediate hosts and so considered as first targets for control and used as sentinels to monitor environmental T. solium contamination (3). Usually environmental contamination with Taenia spp. eggs is a key issue in most of studies with landscape factors influencing presence of Taenia spp. antigens in both pigs and humans (5). Soil-related factors as well as socio-economic and behavioural factors are associated with the emergence of significant clustering human cysticercosis (4,5). However scarce studies has been produced in urban environmental and in developed countries with the finality to characterize the spatial pattern. There are still few data available regarding its prevalence and spatial distribution; Transmission patterns are likely to exhibit correlations as housing conditions, water supply, basic sanitation, schooling and birthplace of the individual or relatives, more than pigs rearing free, soil conditions (9). As a matter of fact, tapeworm carriers from endemic zones can auto-infect or transmit infection to other people or arrive already suffering NCC (as a result of travelling to or being a citizen from an endemic cysticercosis country) to a free cysticercosis country. Transmission is fecal-oral; this includes transmission through person-to-person contact, through autoinfection, or through contaminated food This has been happening in different continents as North America (5.4–18% been autochthonous), Europe and Australia (7). Recently, case reports of NCC have also emerged from Muslim countries. (10). Actually, different papers relate an epidemic situation in Spain and Portugal (7, 8). However the kind of study done does not authorize such conclusion. There are no evidence that infections were acquired in Portugal and there are not characterized the mode of transmission. Papers with these kind of information will be allow to have economic consequences resulted from artificial trade barriers with serious consequences for pig producers and pig meat trade. We need transparency in information’s that allow provide the basis to support the development and targeting of future effective control programmes (and prove we need that). So, to have a real picture of the disease, it is necessary integrate data from human, animal and environmental factors surrounding human and pig cases to characterize the pattern of the transmission. The design needs to be able to capture unexpected, and not common outcomes (routine data). We need to think “One Health” to get a genuine image of the situation.

Las relaciones interpersonales en la transición de los estudiantes de la primaria a la secundaria

Recibido 14 de junio de 2010 • Aceptado 31 de agosto de 2010 • Corregido 12 de mayo de 2011  El tema de las relaciones interpersonales que establece el estudiante con sus pares, profesores y padres de familia, durante el periodo de transición de la primaria a la secundaria, es el punto sobre el cual se discute en este artículo, ya que se presentan los resultados más sobresalientes de la investigación titulada Factores de éxito en la transición de sexto grado a sétimo de secundaria, realizada entre los años 2006-2007, en el marco del Programa de investigación: Perfiles, dinámicas y desafíos de la educación costarricense. Esta investigación plantea, como uno de sus objetivos, recabar la opinión del alumnado de 6º, 7º y 8º años, respecto a lo que consideran como los factores claves para lograr una transición exitosa entre primaria y secundaria. Es un estudio descriptivo y exploratorio, ya que sus resultados permitirán lograr un acercamiento o aproximación al tema y servirá, además, de punto de partida para otros trabajos de investigación vinculados a esta temática. Utiliza técnicas cuantitativas y cualitativas, sin embargo, no es representativa de la situación a nivel nacional. Los hallazgos más importantes permiten concluir que, al ingresar a la secundaria, los estudiantes manifiestan tener buenas relaciones interpersonales con sus padres, sus profesores y sus compañeros, razón por la cual la aprobación y el apoyo que cada uno de ellos les brinde es fundamental para lograr consolidar su posición en el nuevo grupo académico y, por supuesto, para mejorar la percepción que ellos tienen de sí mismos.

Creencias y prácticas de autoevaluación del aprendizaje vigentes en los procesos de formación profesional desarrollados en el CIDE durante el 2007

This article identifies beliefs and practices of self-learning existing processes developed in the CIDE during 2007. It is based on a research project with two groups of informants both academics from CIDE, that during the decade of the 90 participated in the experience of self-learning, some of themas teachers and other as students. Current practices being carried out by academics in the field of self-reporting of apprenticeships in the CIDE, show that they attach great importance to this process in the lesson and agree on the necessity to implement this process in concrete terms, that because, experiences become isolated initiatives that do not fall within any policy, guideline or orientation openly raised by the community CIDE. The beliefs of the participants with regard to the possibility of implementing self-evaluation processes of learning in the training that develops the CIDE, highlight the need for scholars to train group of academics and students in this field and also create more spaces for student involvement. Moreover, scholars believe that the self-assessment of learning is a strategy for developing metacognitive processes and reflective, which is considered a core importance in the training provided by the Centre.