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. 2014 Aug 20;14:449. doi: 10.1186/1471-2334-14-449

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© Horwood et al.; licensee BioMed Central Ltd. 2014

This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. 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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Total case numbers and the main modes of transport between the affected provinces. The figures are based on cases for which time and space data were available. The transport routes depict the main routes of transport available between provinces and do not represent the actual transport paths. Pedestrian transport is also important between neighbouring provinces, but is not depicted. The line colours indicate the different modes of transport: green - air travel; blue - boat; black - road. NCD - National Capital District.