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. 2011 Oct 21;140(7):1193–1206. doi: 10.1017/S0950268811002020

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Copyright © Cambridge University Press 2011 The online version of this article is published within an Open Access environment subject to the conditions of the Creative Commons Attribution-NonCommercial-ShareAlike licence <http://creativecommons.org/licenses/by-nc-sa/2.5/>. The written permission of Cambridge University Press must be obtained for commercial re-use.

The online version of this article is published within an Open Access environment subject to the conditions of the Creative Commons Attribution-NonCommercial-ShareAlike licence <http://creativecommons.org/licenses/by-nc-sa/2.5/>. The written permission of Cambridge University Press must be obtained for commercial re-use.

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Fig. 1 — Incidence of self-reported acute gastroenteritis illness (AGI) per person-year, by study month and by primary symptoms in a 12-month national telephone survey performed in Italy between June 2008 and May 2009 (n=3490). (a) All AGI cases (n=310); (b) AGI cases without concurrent respiratory symptoms (n=232). * Three-month rolling average incidence.