Loading...
About 179 million episodes of acute gastroenteritis (AGE) occur each year in the U.S. Data on water- and food-borne AGE outbreaks have been collected for decades. Starting in 2009, the CDC established the Web-based, voluntary National Outbreak Reporting System (NORS) to support the reporting of all AGE outbreaks, including those transmitted by direct person-to-person (P-to-P) contact.
NORS received reports of 2259 P-to-P AGE outbreaks in 2009–2010 (81,491 cases, 1339 hospitalizations, 136 deaths). Among the 1419 outbreaks (63%) with at least one suspected or confirmed etiology, norovirus was implicated most often (56% of all reported outbreaks), followed by Shigella (4%) and “other/multiple etiologies” including Salmonella, rotavirus, and Sh…