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. 2018 Aug 25;24:20. doi: 10.1186/s40409-018-0162-y

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© The Author(s). 2018

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. 5 — Natural and epidemic cycles of yellow fever: 1 = natural sylvatic cycle; 2 = anthropogenic sylvatic cycle (plantation or deforestation); 3 = village epidemic; 4 = peri-urban or urban epidemic (1 to 4 in Africa, 1 and 4 only in South America) (adapted from [58, 132])