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. 2019 Mar 18;18:83. doi: 10.1186/s12936-019-2726-x

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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. 4 — Estimated proportion of attacks on humans versus cattle when offered a choice between one of each host species (mean and 95% confidence intervals) for Anopheles funestus s.s. and Anopheles arabiensis in Segera, northern Tanzania [22], and Zimbabwe (data extracted from Fig. 7 in reference [30]) compared to those obtained by this study in southern Tanzania. The estimated proportion of attacks on humans (P_h) was calculated as follows for the historical Tanzanian example, based on published estimates for the relative availability of humans versus cattle (λ): P_h = 1/(1 + λ) [61]