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      Sanitation and Health


      1 , 2 , 3 , 2 , *

      PLoS Medicine

      Public Library of Science

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          As one article in a four-part PLoS Medicine series on water and sanitation, David Trouba and colleagues discuss the importance of improved sanitation to health and the role that the health sector can play in its advocacy.

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          Most cited references 18

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          Global data on visual impairment in the year 2002.

          This paper presents estimates of the prevalence of visual impairment and its causes in 2002, based on the best available evidence derived from recent studies. Estimates were determined from data on low vision and blindness as defined in the International statistical classification of diseases, injuries and causes of death, 10th revision. The number of people with visual impairment worldwide in 2002 was in excess of 161 million, of whom about 37 million were blind. The burden of visual impairment is not distributed uniformly throughout the world: the least developed regions carry the largest share. Visual impairment is also unequally distributed across age groups, being largely confined to adults 50 years of age and older. A distribution imbalance is also found with regard to gender throughout the world: females have a significantly higher risk of having visual impairment than males. Notwithstanding the progress in surgical intervention that has been made in many countries over the last few decades, cataract remains the leading cause of visual impairment in all regions of the world, except in the most developed countries. Other major causes of visual impairment are, in order of importance, glaucoma, age-related macular degeneration, diabetic retinopathy and trachoma.
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            Control of neglected tropical diseases.

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              Soil-transmitted helminth infections: updating the global picture.


                Author and article information

                PLoS Med
                PLoS Medicine
                Public Library of Science (San Francisco, USA )
                November 2010
                November 2010
                16 November 2010
                : 7
                : 11
                [1 ]School of Civil Engineering, University of Leeds, Leeds, United Kingdom
                [2 ]Water Supply and Sanitation Collaborative Council, Geneva, Switzerland
                [3 ]Department of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine, London, United Kingdom
                Author notes

                ICMJE criteria for authorship read and met: DM JL BS DT. Agree with the manuscript's results and conclusions: DM JL BS DT. Wrote the first draft of the paper: DM. Contributed to the writing of the paper: JL BS DT. The article was jointly written by all the named authors.

                The Policy Forum allows health policy makers around the world to discuss challenges and opportunities for improving health care in their societies.

                Mara et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
                Page count
                Pages: 7
                Policy Forum
                Evidence-Based Healthcare
                Infectious Diseases
                Public Health and Epidemiology
                Women's Health



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