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      Spatial epidemiology in zoonotic parasitic diseases: insights gained at the 1 st International Symposium on Geospatial Health in Lijiang, China, 2007

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          Abstract

          The 1 st International Symposium on Geospatial Health was convened in Lijiang, Yunnan province, People's Republic of China from 8 to 9 September, 2007. The objective was to review progress made with the application of spatial techniques on zoonotic parasitic diseases, particularly in Southeast Asia. The symposium featured 71 presentations covering soil-transmitted and water-borne helminth infections, as well as arthropod-borne diseases such as leishmaniasis, malaria and lymphatic filariasis. The work made public at this occasion is briefly summarized here to highlight the advances made and to put forth research priorities in this area. Approaches such as geographical information systems (GIS), global positioning systems (GPS) and remote sensing (RS), including spatial statistics, web-based GIS and map visualization of field investigations, figured prominently in the presentation.

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          Schistosomiasis and water resources development: systematic review, meta-analysis, and estimates of people at risk.

          Peter Steinmann, Jennifer Keiser, Robert Bos … (2006)
          An estimated 779 million people are at risk of schistosomiasis, of whom 106 million (13.6%) live in irrigation schemes or in close proximity to large dam reservoirs. We identified 58 studies that examined the relation between water resources development projects and schistosomiasis, primarily in African settings. We present a systematic literature review and meta-analysis with the following objectives: (1) to update at-risk populations of schistosomiasis and number of people infected in endemic countries, and (2) to quantify the risk of water resources development and management on schistosomiasis. Using 35 datasets from 24 African studies, our meta-analysis showed pooled random risk ratios of 2.4 and 2.6 for urinary and intestinal schistosomiasis, respectively, among people living adjacent to dam reservoirs. The risk ratio estimate for studies evaluating the effect of irrigation on urinary schistosomiasis was in the range 0.02-7.3 (summary estimate 1.1) and that on intestinal schistosomiasis in the range 0.49-23.0 (summary estimate 4.7). Geographic stratification showed important spatial differences, idiosyncratic to the type of water resources development. We conclude that the development and management of water resources is an important risk factor for schistosomiasis, and hence strategies to mitigate negative effects should become integral parts in the planning, implementation, and operation of future water projects.
          Article 0 comments Cited 766 times – based on 0 reviews     Review now
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            Soil-transmitted helminth infections: updating the global picture.

            Simon J. Brooker, Peter Hotez, R Fuente … (2003)
            Article 0 comments Cited 190 times – based on 0 reviews     Review now
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              Malaria resurgence in the East African highlands: temperature trends revisited.

              M. Pascual, J. Ahumada, L F Chaves … (2006)
              The incidence of malaria in the East African highlands has increased since the end of the 1970s. The role of climate change in the exacerbation of the disease has been controversial, and the specific influence of rising temperature (warming) has been highly debated following a previous study reporting no evidence to support a trend in temperature. We revisit this result using the same temperature data, now updated to the present from 1950 to 2002 for four high-altitude sites in East Africa where malaria has become a serious public health problem. With both nonparametric and parametric statistical analyses, we find evidence for a significant warming trend at all sites. To assess the biological significance of this trend, we drive a dynamical model for the population dynamics of the mosquito vector with the temperature time series and the corresponding detrended versions. This approach suggests that the observed temperature changes would be significantly amplified by the mosquito population dynamics with a difference in the biological response at least 1 order of magnitude larger than that in the environmental variable. Our results emphasize the importance of considering not just the statistical significance of climate trends but also their biological implications with dynamical models.
              Article 0 comments Cited 158 times – based on 0 reviews     Review now
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                Author and article information

                Journal
                Journal ID (nlm-ta): Parasit Vectors
                Title: Parasites & Vectors
                Publisher: BioMed Central
                ISSN (Electronic): 1756-3305
                Publication date Collection: 2009
                Publication date (Electronic): 4 February 2009
                Volume: 2
                Page: 10
                Affiliations
                [1 ]National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention, Shanghai, PR China
                [2 ]Department of Public Health and Epidemiology, Swiss Tropical Institute, Basel, Switzerland
                [3 ]Jiangsu Institute of Parasitic Diseases, Wuxi, PR China
                [4 ]DBL – Institute for Health Research and Development, University of Copenhagen, Denmark
                [5 ]Ingerod, Brastad, Sweden
                [6 ]Department of Pathobiological Sciences, School of Veterinary Medicine, Skip Bertman Drive, Louisiana State University, Baton Rouge, LA, USA
                Article
                Publisher ID: 1756-3305-2-10
                DOI: 10.1186/1756-3305-2-10
                PMC ID: 2663554
                PubMed ID: 19193214
                SO-VID: c987ba23-7107-48e6-95e3-66736c17fdc3
                Copyright © Copyright © 2009 Zhou et al; licensee BioMed Central Ltd.
                License:

                This is an Open Access article distributed under the terms of the Creative Commons Attribution License ( http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

                History
                Date received : 12 August 2008
                Date accepted : 4 February 2009
                Categories
                Subject: Meeting Report

                ScienceOpen disciplines: Parasitology
                Data availability:
                ScienceOpen disciplines: Parasitology

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