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. 2010 Jan 27;9:3. doi: 10.1186/1476-072X-9-3

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Copyright ©2010 Souris et al; licensee BioMed Central Ltd.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Evolution of Avian Influenza cases number. Histogram by week from July, 1^st, 2004 until May, 1^st, 2008. Six successive waves are highlighted (labeled) in the figure. The first wave (end 2003-May 2004) does not appear in the figure, as cases were recorded without enough precision.