Proposal of a Geographic Information System for modeling zoonotic fasciolosis transmission in the Andes

Fuentes, Màrius V.

doi:10.4067/s0717-77122004000100010

Cited by 13 publications

(8 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These findings highlight the role of precipitation, grazing and drainage on the survival and development of parasitic stages of F. hepatica and the intermediate snail hosts. Differences in the climatic and environmental variables for high-risk and low-risk clusters were consistent with the findings of research studies, which suggested (using different approaches) that the total number of wet days (McCann et al, 2010a;Selemetas et al, 2015), rain-days (Selemetas et al, 2015), amount of rainfall Yilma and Malone, 1998;McCann et al, 2010a,b;Bennema et al, 2011;Martins et al, 2012), NDVI (Fuentes, 2004(Fuentes, , 2006Durr et al, 2005;Fuentes et al, 2005), temperature Yilma and Malone, 1998;Bossaert et al, 1999;McCann et al, 2010a,b;Martins et al, 2012) and soil type (McCann et al, 2010a) may play a role in the exposure to F. hepatica. In addition, the association of well drained soils with low-risk clusters with poorly drained soils with high-risk clusters reflects the importance of impeded drainage for the transmission of fasciolosis, which is in agreement with the findings reported by Charlier et al (2011).…”

Section: Discussionsupporting

confidence: 83%

Cluster analysis of fasciolosis in dairy cow herds in Munster province of Ireland and detection of major climatic and environmental predictors of the exposure risk

et al. 2015

View full text Add to dashboard Cite

Abstract. Fasciolosis caused by Fasciola hepatica is a widespread parasitic disease in cattle farms. The aim of this study was to detect clusters of fasciolosis in dairy cow herds in Munster Province, Ireland and to identify significant climatic and environmental predictors of the exposure risk. In total, 1,292 dairy herds across Munster was sampled in September 2012 providing a single bulk tank milk (BTM) sample. The analysis of samples by an in-house antibody-detection enzyme-linked immunosorbent assay (ELISA), showed that 65% of the dairy herds (n = 842) had been exposed to F. hepatica. Using the Getis-Ord Gi* statistic, 16 high-risk and 24 low-risk (P <0.01) clusters of fasciolosis were identified. The spatial distribution of high-risk clusters was more dispersed and mainly located in the northern and western regions of Munster compared to the low-risk clusters that were mostly concentrated in the southern and eastern regions. The most significant classes of variables that could reflect the difference between high-risk and low-risk clusters were the total number of wet-days and rain-days, rainfall, the normalized difference vegetation index (NDVI), temperature and soil type. There was a bigger proportion of well-drained soils among the low-risk clusters, whereas poorly drained soils were more common among the high-risk clusters. These results stress the role of precipitation, grazing, temperature and drainage on the life cycle of F. hepatica in the temperate Irish climate. The findings of this study highlight the importance of cluster analysis for identifying significant differences in climatic and environmental variables between high-risk and low-risk clusters of fasciolosis in Irish dairy herds.

show abstract

Section: Discussionsupporting

confidence: 83%

Cluster analysis of fasciolosis in dairy cow herds in Munster province of Ireland and detection of major climatic and environmental predictors of the exposure risk

et al. 2015

View full text Add to dashboard Cite

show abstract

“…In the last decade, a series of studies using GIS have demonstrated the real importance of this resource in the generation of knowledge about the epidemiology of several diseases (FUENTES, 2004). The epidemiological reason to use GIS is to allow the development of spatial and temporal models to map fascioliasis permitting the classification of the transmission into low, moderate or high-risk areas to coordinate the implementation of control activities (FUENTES; SAINZ-ELIPE; NIETO, 2005).…”

Section: Geographic Information System (Gis)mentioning

confidence: 99%

Fasciola hepatica: epidemiology, perspectives in the diagnostic and the use of geoprocessing systems for prevalence studies

et al. 2015

View full text Add to dashboard Cite

Fasciola hepatica is a parasite that is located in the liver of ruminants with the possibility to infect horses, pigs and humans. The parasite belongs to the Trematoda class, and it is the agent causing the disease called fasciolosis. This disease occurs mainly in temperate regions where climate favors the development of the organism. These conditions must facilitate the development of the intermediate host, the snail of the genus Lymnaea. The infection in domestic animals can lead to decrease in production and control is made by using triclabendazole. Triclabendazole resistance in F. hepatica has been reported worldwide including in Brazil. Another concern is the increase number of human cases with the consumption of contaminated vegetables in regions where sanitation is inadequate together with the presence of infected animals and the absence of efficient control methods. The knowledge of the epidemiology of animal fasciolosis, including their occurrence, distribution and monitoring with techniques such as PCR and ELISA is reaching a new level with the usage of the Geographic Information System. The objective is to use new technologies for early fasciolosis diagnostic, as well as, to develop geoprocessing technics that could allow the determination of its prevalence and the evolution of clinical cases in animals before hand. This review paper provides an overview of F. hepatica, covering the aspects listed above, including original data. Key words: Fasciola hepatica, epidemiology, geographic information system, zoonosis ResumoFasciola hepatica é um parasita que se localiza no fígado de ruminantes, podendo infectar equinos, suínos e humanos. O parasito pertence à classe Trematoda, sendo o agente responsável pela doença denominada fasciolose, que ocorre principalmente em regiões temperadas, com clima favorável para o desenvolvimento do organismo. Tais condições devem auxiliar no desenvolvimento do hospedeiro intermediário, o molusco do gênero Lymnaea. Existe uma crescente preocupação quanto ao número de casos humanos diagnosticados em certas regiões cujo saneamento básico é inadequado, há presença de animais infectados e cultura em consumir hortaliças de áreas contaminadas cruas ou pouco cozidas. O parasitismo em animais domésticos pode levar a uma queda no desempenho animal e seu controle é realizado, principalmente, com o uso do triclabendazole. Entretanto, relatos quanto à resistência do patógeno à este produto vêm sendo descritos, inclusive no Brasil. O conhecimento da epidemiologia da fasciolose animal, incluindo sua ocorrência, distribuição e monitoramento com técnicas laboratoriais como o ELISA e a PCR, estão tendo um novo progresso com a utilização do Sistema de Informação Geográfica. O objetivo de utilizar essas novas tecnologias é diagnosticar a fasciolose mais precocemente, assim como, desenvolver técnicas de geoprocessamento que possam determinar a prevalência e a evolução dos casos em animais. Este artigo aborda recentes avanços no monitoramento da F. hepatica, cobrindo alguns aspectos lista...

show abstract

“…However, while the South America MMDb is being prepared, and taking into account the particularities of human and animal fasciolosis, based on the aforementioned results concerning this disease in the Andes, Fuentes (2004) proposed the basis for the development of a GIS for conducting an epidemiological control programme for zoonotic fasciolosis in the Andes (Fig. 5).…”

Section: The Minimum Medical Gis Database (Mmdb)mentioning

confidence: 99%

Remote sensing and climate data as a key for understanding fasciolosis transmission in the Andes: review and update of an ongoing interdisciplinary project

Fuentes

2006

Geospat Health

Self Cite

View full text Add to dashboard Cite

Abstract. Fasciolosis caused by Fasciola hepatica in various SouthAmerican countries located on the slopes of the Andes has been recognized as an important public health problem. However, the importance of this zoonotic hepatic parasite was neglected until the last decade. Countries such as Peru and Bolivia are considered to be hyperendemic areas for human and animal fasciolosis, and other countries such as Chile, Ecuador, Colombia and Venezuela are also affected. At the beginning of the 1990s a multidisciplinary project was launched with the aim to shed light on the problems related to this parasitic disease in the Northern Bolivian Altiplano. A few years later, a geographic information system (GIS) was incorporated into this multidisciplinary project analysing the epidemiology of human and animal fasciolosis in this South American Andean region. Various GIS projects were developed in some Andean regions using climatic data, climatic forecast indices and remote sensing data.Step by step, all these GIS projects concerning the forecast of the fasciolosis transmission risk in the Andean mountain range were revised and in some cases updated taking into account new data. The first of these projects was developed on a regional scale for the central Chilean regions and the proposed model was validated on a local scale in the Northern Bolivian Altiplano. This validated mixed model, based on both fasciolosis climatic forecast indices and normalized difference vegetation index values from Advanced Very High Resolution Radiometer satellite sensor, was extrapolated to other human and/or animal endemic areas of Peru and Ecuador. The resulting fasciolosis risk maps make it possible to show the known human endemic areas of, mainly, the Peruvian Altiplano, Cajamarca and Mantaro Peruvian valleys, and some valleys of the Ecuadorian Cotopaxi province. Nevertheless, more climate and remote sensing data, as well as more accurate epidemiological reports, have to be incorporated into these GIS projects, which should be considered the key in understanding fasciolosis transmission in the Andes.

show abstract

Proposal of a Geographic Information System for modeling zoonotic fasciolosis transmission in the Andes

Cited by 13 publications

References 19 publications

Cluster analysis of fasciolosis in dairy cow herds in Munster province of Ireland and detection of major climatic and environmental predictors of the exposure risk

Cluster analysis of fasciolosis in dairy cow herds in Munster province of Ireland and detection of major climatic and environmental predictors of the exposure risk

Fasciola hepatica: epidemiology, perspectives in the diagnostic and the use of geoprocessing systems for prevalence studies

Remote sensing and climate data as a key for understanding fasciolosis transmission in the Andes: review and update of an ongoing interdisciplinary project

Contact Info

Product

Resources

About