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. 2019 Dec 30;17:232. doi: 10.1186/s12916-019-1459-6

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© The Author(s). 2019

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. 2 — Travel times to health facilities from areas with potential for VHF spillover, Nigeria and the Central African Republic (CAR). a The travel times in hours to health facilities in Nigeria, a country with an extensive facility network (green points). b The travel time in hours to the more unevenly distributed health facilities (green points) in CAR. c, d Nationally ranked travel times, with the most remote locations presented in dark blue and the most accessible locations in yellow, with health facilities presented in red. Areas in-country in white have no VHF spillover potential