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. 2018 Jan 8;11:8. doi: 10.1186/s13071-017-2564-z

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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. 1 — Geographical distributions of observed cat flea Ctenocephalides felis (a) and dog flea C. canis (b) infestation reports in free-roaming mammals around the globe. Sizes of points represent the number of mammal species sampled in each record. Colours correspond to the total number of feral host species observed to carry fleas at each location (blue = 0, purple = 1, magenta = 2, pink = 3, red = 4)