Surveillance of Norovirus Outbreaks
Number of reported acute gastroenteritis outbreaks by month of first illness onset and etiology, National Outbreak Reporting System, United States, 2009-2010.
*Includes outbreaks caused by a single etiologic agent other than norovirus or multiple etiologies.
Image courtesy of Hall AJ, Wikswo ME, Manikonda K, Roberts VA, Yoder JS, Gould LH. Acute Gastroenteritis Surveillance through the National Outbreak Reporting System, United States. EID Journal. Aug 2013; 19(3).
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