An outbreak of norovirus gastroenteritis affected passengers on two consecutive cruises of ship X and continued on 4 subsequent cruises despite a 1-week sanitization. We documented transmission by food and person-to-person contact; persistence of virus despite sanitization onboard, including introductions of new strains; and seeding of an outbreak on land.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3294347PMC
http://dx.doi.org/10.3201/eid1101.040434DOI Listing

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