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. 2018 Apr 24;18:544. doi: 10.1186/s12889-018-5422-9

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© The Author(s) 2018

Open Access This 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 — Median time to detection per month. Median T_D for influenza and Cryptosporidium spp. outbreaks stratified by month of the onset and syndromic indicator. The colour of the boxes indicate the median T_D. The darkness of the box filling indicates the probability of detection (P_D) as defined in the legend. Boxes with a P_D≤0.50 were excluded