A waterborne outbreak of Norwalk-like virus among snowmobilers-Wyoming, 2001.

Anderson, Alicia D; Heryford, Annette G; Sarisky, John P; Higgins, Charles; Monroe, Stephan S; Beard, R Suzanne; Newport, Christina M; Cashdollar, Jennifer L et al. · J Infect Dis · 2003

retrospective_cohort · Level III

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Abstract

In February 2001, episodes of acute gastroenteritis were reported to the Wyoming Department of Health from persons who had recently vacationed at a snowmobile lodge in Wyoming. A retrospective cohort study found a significant association between water consumption and illness, and testing identified Norwalk-like virus (NLV) in 8 of 13 stool samples and 1 well. Nucleotide sequences from the positive well-water specimen and 6 of the positive stool samples were identical. This multistrain NLV outbreak investigation illustrates the importance of NLV as a cause of waterborne illness and should encourage monitoring for NLVs in drinking water.

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