Norwalk virus
noun
Nor·walk virus
ˈnȯr-ˌwȯk-
: a highly infectious virus first identified as the causative agent of an outbreak of gastroenteritis in a school in Norwalk, Ohio in 1968
Note: Norwalk virus was later officially classified as a norovirus (species Norwalk virus). While the originally identified virus and closely related forms may still be referred to as Norwalk viruses, they are now more commonly called noroviruses.
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Merriam-Webster unabridged
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