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 listeriosis (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 Mild cases of listeriosis, the illness caused by listeria monocytogenes, are marked by typical food poisoning symptoms such as fever and diarrhea, according to the Centers for Disease Control and Prevention. Carolyn L. Todd, SELF, 17 Aug. 2021 If ingested, listeria bacteria can cause a foodborne illness called listeriosis. Sarah Jacob, SELF, 21 July 2021 Three listeriosis cases, including one death, occurred between April 6 and June 5, the FSIS found. Marc Bona, cleveland, 6 July 2021 The investigation identified three listeriosis illnesses, including one death, between April 6 and June 5. Nicholas Rice,, 6 July 2021 An investigation identified three listeriosis illnesses, including one death, between April 6 and June 5. Sue Selasky, Detroit Free Press, 5 July 2021 Symptoms of listeriosis include fever, muscle aches, headache, stiff neck, confusion, loss of balance and convulsions, sometimes preceded by diarrhea or other gastrointestinal symptoms. NBC News, 4 July 2021 Invasive listeriosis is a much more serious condition with a 20 to 30% risk of death. Bruce Y. Lee, Forbes, 3 July 2021 In pregnant people, invasive listeriosis may cause only flu-like symptoms (such as fatigue or muscle aches) but result in serious pregnancy complications. Carolyn L. Todd, SELF, 2 June 2021

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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The first known use of listeriosis was in 1941

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Last Updated

12 Oct 2021

Cite this Entry

“Listeriosis.” Dictionary, Merriam-Webster, Accessed 20 Oct. 2021.

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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 listeriosis (audio) \
plural listerioses also listerelloses\ -​ˌsēz How to pronounce listeriosis (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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