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. 2011 Nov 8;5(11):e1394. doi: 10.1371/journal.pntd.0001394

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Gutierrez et al.

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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A, Influenza A H1N1 and dengue cases in the cohort study by week, 2009. B, Influenza A H1N1 and dengue cases in Nicaragua by week, 2009. National surveillance statistics for influenza (CNDR/Ministry of Health) were used to determine the cases of Influenza H1N1 2009 by week in 2009.