Rift Valley fever

noun

: an acute, usually epizootic, mosquito-borne disease of domestic animals chiefly of eastern and southern Africa that is caused by a bunyavirus (species Rift Valley fever phlebovirus of the genus Phlebovirus), is marked especially by fever, abortion, and death of newborns, and is sometimes transmitted to humans usually in a milder form marked by flu-like symptoms

Examples of Rift Valley fever in a Sentence

Recent Examples on the Web That list also includes Crimean-Congo hemorrhagic fever; the Ebola and Marburg viruses; Lassa fever; coronaviruses SARS, MERS, and COVID-19; henipaviruses, and Rift Valley fever. Erin Prater, Fortune Well, 26 Apr. 2023 Mosquitoes carry many threatening diseases, like chikungunya, dengue, lymphatic filariasis, Rift Valley fever, Yellow fever, Zika, malaria, Japanese encephalitis and West Nile fever, WHO reports. Clare Mulroy, USA TODAY, 2 Feb. 2023 Ebola and rabies, anthrax and smallpox, Rift Valley fever and monkeypox. Helen Branswell, STAT, 21 Sep. 2022 Rounding out the disease list are: Chikungunya virus, Crimean-Congo haemorrhagic fever, Dengue, Malaria, Marburg virus disease, Lassa fever, MERS, Rift Valley fever, Thrombocytopenia syndrome and Tuberculosis. Alex Knapp, Forbes, 8 Mar. 2022 In 2000, Saudi Arabia banned livestock export from Somalia because of the outbreak of Rift Valley fever. Abdullahi Yussuf, Quartz Africa, 28 July 2020 The goal of this five-year, multidisciplinary project is to examine, for the first time, exactly how climate affects Rift Valley fever in southern Africa. Lois Parshley, Scientific American, 1 May 2018 See More

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'Rift Valley fever.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

Etymology

(Great) Rift Valley, Africa

First Known Use

circa 1931, in the meaning defined above

Time Traveler
The first known use of Rift Valley fever was circa 1931

Dictionary Entries Near Rift Valley fever

Cite this Entry

“Rift Valley fever.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Rift%20Valley%20fever. Accessed 3 Mar. 2024.

Medical Definition

Rift Valley fever

noun
Rift Val·​ley fever ˈrift-ˌval-ē- How to pronounce Rift Valley fever (audio)
: an acute usually epizootic mosquito-borne disease of domestic animals (as sheep and cattle) chiefly of eastern and southern Africa that is caused by a bunyavirus of the genus Phlebovirus (species Rift Valley fever phlebovirus), is marked especially by fever, abortion, death of newborns, diarrhea, and jaundice, and is sometimes transmitted to humans usually in a milder form marked by flu-like symptoms

More from Merriam-Webster on Rift Valley fever

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!