leptospirosis

noun

lep·​to·​spi·​ro·​sis ˌlep-tə-spī-ˈrō-səs How to pronounce leptospirosis (audio)
plural leptospiroses ˌlep-tə-spī-ˈrō-ˌsēz How to pronounce leptospirosis (audio)
: any of several diseases of humans and domestic animals that are caused by infection with leptospires

Examples of leptospirosis in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Feral dogs can disseminate rabies or fleas, and rats can host a variety of pathogens that cause leptospirosis or hantavirus. Jonathan Lambert, NPR, 11 July 2025 First of all, when coming into contact with wildlife, such dogs can catch diseases such as leptospirosis and rabies. Maria Azzurra Volpe, MSNBC Newsweek, 4 July 2025 Between 100 and 200 people in the U.S. get leptospirosis every year.1 Vibrio is another bacterium that resides in both saltwater and brackish water, where freshwater mixes with seawater, Pritt said. Julia Ries, Health, 17 June 2025 New York isn't the only city plagued by leptospirosis cases. Beth Mole, Ars Technica, 17 Apr. 2024 See All Example Sentences for leptospirosis

Word History

Etymology

New Latin

First Known Use

circa 1926, in the meaning defined above

Time Traveler
The first known use of leptospirosis was circa 1926

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Cite this Entry

“Leptospirosis.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/leptospirosis. Accessed 21 Jul. 2025.

Medical Definition

leptospirosis

noun
lep·​to·​spi·​ro·​sis ˌlep-tə-spī-ˈrō-səs How to pronounce leptospirosis (audio)
plural leptospiroses -ˌsēz How to pronounce leptospirosis (audio)
: any of several diseases of humans and domestic animals (as cattle and dogs) that are caused by infection with spirochetes of the genus Leptospira

called also lepto

see stuttgart disease, weil's disease

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