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JAMA. 2002;288:1711-1713.

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

MMWR. 2002;51:661-663

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Norwalk-like viruses (NLVs) are an important cause of gastroenteritis in the United States, with approximately 23 million cases of NLV-associated gastroenteritis occurring each year.¹ NLVs accounted for 96% of nonbacterial gastroenteritis outbreaks reported to CDC during January 1996–June 1997.² These outbreaks are common especially in settings of crowding and poor sanitation.^2-3 Transmission of NLVs in these settings is facilitated by high attack rates (82%),⁴ a low infectious dose (<100 virions), the absence of long-lasting immunity, the durability of the organism,⁵ and the potential for multiple modes of transmission.^{3, 6} In 2001, outbreaks were reported from youth camps in Wisconsin and Florida, resulting in closure of the camps (⁷; CDC, unpublished data, 2001). This report describes an outbreak of NLV-associated gastroenteritis at a large youth encampment in Virginia and the successful use of control measures to limit spread of illness to other campers. Rapid, effective containment . . . [Full Text of this Article]

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