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. 2020 Feb 12;9:21. doi: 10.1186/s40249-020-0634-5

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© The Author(s). 2020

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 1 — Map showing the location of Kobeni city. The blue line indicates paved roads. The road connecting Nouakchott and Aioun is part of ‘Route de l’Espoir’ which continues eastward from Aioun and ends at the city of Néma in southeastern Mauritania