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JAMA. 2007;298:1632-1634.

	Since this article does not have an abstract, we have provided the first 150 words of the full text and any section headings.

MMWR. 2007;56:842-846

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In late 2006, CDC began receiving requests from numerous state public health departments for information about a perceived increase in the number of outbreaks of acute gastroenteritis (AGE), especially those involving person-to-person transmission in long-term–care facilities. No national surveillance system exists for AGE outbreaks, including those caused by norovirus, unless foodborne transmission is suspected. In the absence of national surveillance data, CDC attempted to better characterize the outbreaks of AGE by analyzing information from the following sources: (1) detailed data on recent AGE outbreaks in three of the states that had contacted CDC about a possible increase (North Carolina, Wisconsin, and New York); (2) emergency department (ED) syndromic surveillance data from Boston, Massachusetts; (3) basic epidemiologic data on AGE outbreaks from a CDC survey of state health departments; and (4) laboratory data from CDC. The analysis suggests that a national increase has occurred . . . [Full Text of this Article]

North Carolina