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. 2015 Oct 26;15:460. doi: 10.1186/s12879-015-1182-7

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© Morgan and David. 2015

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. 3 — Type Ia reemerging pathogens (see text), annual citations per 1000 citations in PubMed for 1963–2014 for (a) West Nile Virus; also included is annual incidence per 100,000 U.S. population; and (b) Chikungunya virus; also included is annual incidence per 100,000 North/South American population and (c) Avian influenza; also included is annual incidence per 100,000 world population. See Table 1 for PubMed search criteria. *Note y-axis scales differ to make trends comparable