lis·​te·​ri·​o·​sis | \ li-ˌstir-ē-ˈō-səs How to pronounce listeriosis (audio) \
plural listerioses\ li-​ˌstir-​ē-​ˈō-​ˌsēz How to pronounce listerioses (audio) \

Definition of listeriosis

: a serious encephalitic disease of a wide variety of animals that is caused by a bacterium (Listeria monocytogenes) and that in animals is often fatal but in humans is usually not fatal

Examples of listeriosis in a Sentence

Recent Examples on the Web People who have more mild symptoms of listeriosis don’t usually need treatment and are generally advised to just wait out the infection. Sarah Madaus, SELF, "Apples, Watermelon, and Other Fruit Sold at Walmart Recalled Due to Listeria Risk," 5 Oct. 2020 Pregnant women typically only get a fever and other flu-like symptoms, but a listeriosis infection can lead to a miscarriage. Jen Christensen, CNN, "Enoki mushrooms tied to listeria outbreak that killed four people and hospitalized 31, CDC says," 10 June 2020 Listeria monocytogenes is a pathogenic bacteria that can cause listeriosis. Allen Kim, CNN, "More than 100 vegetable products recalled for listeria concerns," 4 Nov. 2019 According to the federal Centers for Disease Control and Prevention, about 1,600 people contract listeriosis every year, and about 260 die. Ron Hurtibise,, "Penn Dutch-type germs are common in supermarkets, but the state rarely tests for them," 4 Oct. 2019 Listeria monocytogenes is a species of bacteria that can cause the infectious illness listeriosis. Ryan Prior, CNN, "Several products from Trader Joe's are being recalled over possible listeria contamination," 4 Dec. 2019 An estimated 1,600 people are infected by listeriosis every year and approximately 260 die, according to the CDC. Allen Kim, CNN, "More than 100 vegetable products recalled for listeria concerns," 4 Nov. 2019 About 1,600 people get listeriosis each year, and about 260 die, the CDC says. Doreen Christensen,, "Penn Dutch to permanently close Hollywood and Margate stores after inspectors find more listeria," 18 Sep. 2019 An estimated 1,600 people get listeriosis each year, and about 260 die, the CDC noted. Kate Gibson, CBS News, "Warning of possible listeria in vegetables sold by retailers including Amazon Go," 11 Nov. 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'listeriosis.' 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 listeriosis

1941, in the meaning defined above

History and Etymology for listeriosis

New Latin, from Listeria, from Joseph Lister

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Time Traveler for listeriosis

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The first known use of listeriosis was in 1941

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Statistics for listeriosis

Last Updated

11 Oct 2020

Cite this Entry

“Listeriosis.” Dictionary, Merriam-Webster, Accessed 20 Oct. 2020.

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More Definitions for listeriosis


lis·​te·​ri·​o·​sis | \ (ˌ)lis-ˌtir-ē-ˈō-səs How to pronounce listeriosis (audio) \
variants: also listerellosis \ ˌlis-​tə-​rə-​ˈlō-​səs How to pronounce listerellosis (audio) \
plural listerioses also listerelloses\ -​ˌsēz How to pronounce listerelloses (audio) \

Medical Definition of listeriosis

: a serious disease of animals and humans that is caused by a bacterium of the genus Listeria (L. monocytogenes), that in animals causes severe encephalitis accompanied by disordered movements and is often fatal, that is contracted by humans especially from contaminated food (as processed meats or unpasteurized milk or cheese), that in otherwise healthy people typically takes the form of a mild flu-like illness or has no noticeable symptoms, that in neonates, the elderly, and the immunocompromised often causes serious sometimes fatal illness with symptoms including meningitis and sepsis, and that in pregnant women usually causes only mild illness in the mother but often results in miscarriage, stillbirth, or premature birth — see circling disease

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