norovirus

noun
nor·​o·​virus | \ ˈnȯr-ə-ˌvī-rəs How to pronounce norovirus (audio) \

Definition of norovirus

: any of a genus (Norovirus) of small, round, single-stranded RNA viruses that includes a single species (species Norwalk virus) with various strains causing gastroenteritis in people and animals (such as cows, pigs, and dogs) People spread the virus by eating food or drinking liquids that are contaminated with norovirus, touching surfaces or objects contaminated with norovirus and then touching their mouth or having direct contact with another person who is infected.— Cherie Black

Note: In people, noroviruses cause gastroenteritis marked chiefly by sudden onset diarrhea, vomiting, nausea, and abdominal cramps.

— see norwalk virus

Examples of norovirus in a Sentence

Recent Examples on the Web With acute viral infections—such as the stomach-churning norovirus—people develop symptoms quickly and then fully recover within days. Lois Parshley, National Geographic, "How long does the coronavirus last inside the body?," 3 June 2020 Brina—who has been on six sailings with Royal Caribbean—says her first cruise came after a norovirus outbreak on Explorer of the Seas in January 2014. Corina Quinn, Condé Nast Traveler, "Travelers Are Ready to Cruise Again—And They're Booking Up 2021," 7 May 2020 The norovirus annually causes millions of people to develop gastrointestinal problems, with thousands hospitalized and hundreds dying. Kimberly Kindy, Washington Post, "As coronavirus spreads, the people who prepare your food probably don’t have paid sick leave," 4 Mar. 2020 The Louisiana Department of Public Health is investigating an outbreak of the norovirus linked to a Lake Charles casino. Leada Gore | Lgore@al.com, al, "200 people sickened with norovirus linked to Louisiana casino," 10 Feb. 2020 An elementary school in Seattle, Wash., is closed Friday due to an outbreak of the highly contagious norovirus. Fox News, "Norovirus outbreak closes Washington school; more than 100 students, staff sickened," 13 Dec. 2019 Classes in an entire school district in Colorado have been canceled Thursday and Friday after a suspected outbreak of the highly contagious norovirus. NBC News, "Suspected norovirus outbreak shuts down Colorado school district," 21 Nov. 2019 According to the Centers for Disease Control and Prevention, nearly 130,000 cruise passengers were sickened by norovirus from 2008 to 2014. Los Angeles Times, "Column: The cruise ship industry is sinking. I’m OK with that," 8 May 2020 For decades, cruise ships have battled outbreaks of norovirus. David Yaffe-bellany, New York Times, "Carnival Plans to Sail Again in August, Maybe," 4 May 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'norovirus.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of norovirus

2002, in the meaning defined above

History and Etymology for norovirus

New Latin, from English Norwalk virus + New Latin -o- + virus

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Time Traveler for norovirus

Time Traveler

The first known use of norovirus was in 2002

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Statistics for norovirus

Last Updated

9 Jun 2020

Cite this Entry

“Norovirus.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/norovirus. Accessed 2 Jul. 2020.

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More Definitions for norovirus

norovirus

noun
nor·​o·​virus | \ ˌnȯr-ō-ˈvī-rəs How to pronounce norovirus (audio) \

Medical Definition of norovirus

1 capitalized : a genus of small, round, single-stranded, highly infectious RNA viruses that includes a single species (species Norwalk virus) with various strains causing gastroenteritis in people and animals (such as cows and dogs)
2 : any virus of the genus Norovirus People spread the virus by eating food or drinking liquids that are contaminated with norovirus, touching surfaces or objects contaminated with norovirus and then touching their mouth or having direct contact with another person who is infected.— Cherie Black, The Seattle Post-Intelligencer, 29 Dec. 2006

Note: In people, noroviruses cause gastroenteritis marked chiefly by sudden onset, diarrhea, vomiting, nausea, and abdominal cramps.

— see norwalk virus

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