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. 2007 Oct;13(10):1504–1506. doi: 10.3201/eid1310.070356

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Location of the study areas in Southern Sudan: A) Western Upper Nile; B) West Equatoria Region, Mundri County (source: Centre for Development and Environment, University of Berne, Switzerland; available from www.cde.unibe.ch/sudan/maps), with an inset of the whole country (source: World Health Organization; available from www.emro.who.int/sudan/media/pdf/sud-states-2006.pdf).