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单词 rift valley fever
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Rift Valley fever


Rift Valley fever

n. An acute infectious disease of humans and domestic animals, especially cattle and sheep, caused by a mosquito-borne virus and characterized in humans by fever and sometimes ocular disease, hemorrhagic symptoms, or encephalitis, and in animals by fever, abortion, and death of newborns. Rift Valley fever was first described in Kenya and occurs primarily in sub-Saharan Africa.
[After the Great Rift Valley.]
Thesaurus
Noun1.Rift Valley fever - an infection common in Africa caused by a bunyavirus; transmitted by mosquitoes or by handling infected animalshaemorrhagic fever, hemorrhagic fever, VHF, viral haemorrhagic fever, viral hemorrhagic fever - a group of illnesses caused by a viral infection (usually restricted to a specific geographic area); fever and gastrointestinal symptoms are followed by capillary hemorrhage

Rift Valley fever


Rift Valley fever

An arthropod-borne (primarily mosquito), acute, febrile, viral disease of humans and numerous species of animals. Rift Valley fever is caused by a ribonucleic acid (RNA) virus in the genus Phlebovirus of the family Bunyaviridae. In sheep and cattle, it is also known as infectious enzootic hepatitis. First described in the Rift Valley of Africa, the disease presently occurs in west, east, and south Africa and has extended as far north as Egypt. Historically, outbreaks of Rift Valley fever have occurred at 10–15-year intervals in normally dry areas of Africa subsequent to a period of heavy rainfall.

In humans, clinical signs of Rift Valley fever are influenzalike, and include fever, headache, muscular pain, weakness, nausea, epigastric pain, and photophobia. Most people recover within 4–7 days, but some individuals may have impaired vision or blindness in one or both eyes; a small percentage of infected individuals develop a hemorrhagic syndrome and die.

Rift Valley fever should be suspected when high abortion rates, high mortality, or extensive liver lesions occur in newborn animals. The diagnosis is confirmed by isolating the virus from tissues of the infected animal or human. Control of the disease is best accomplished by widespread vaccination of susceptible animals to prevent amplification of the virus and, thus, infection of vectors. Any individual that works with infected animals or live virus in a laboratory should be vaccinated. See Animal virus, Vaccination

Rift Valley fever

[′rift ¦val·ē ′fē·vər] (medicine) A toxic generalized febrile virus disease of humans and animals in South and East Africa, transmitted by a mosquito, and characterized by headache, photophobia, myalgia, and anorexia.

Rift Valley fever


Rift Valley fever

 a zoonotic febrile disease with symptoms like those of dengue, due to an arbovirus transmitted by mosquitoes or by contact with diseased animals; first observed in the Rift Valley, Kenya.

Rift Val·ley fe·ver

a fatal endemic disease of sheep, caused by Rift Valley fever virus, a member of the family Bunyaviridae, which is also pathogenic for humans and cattle, producing in humans fever of an undifferentiated type; transmitted by mosquitoes and direct contact. [Rift Valley in Kenya]

Rift Valley fever

n. An acute infectious disease of humans and domestic animals, especially cattle and sheep, caused by a mosquito-borne virus and characterized in humans by fever and sometimes ocular disease, hemorrhagic symptoms, or encephalitis, and in animals by fever, abortion, and death of newborns. Rift Valley fever was first described in Kenya and occurs primarily in sub-Saharan Africa.

Rift valley fever

Infectious disease A dengue-like viral disease spread by mosquitoes in floods, causing fatal enzootic hepatitis in ruminants–sheep, cattle and occasional human epidemics, by direct contact Clinical Abrupt onset with a biphasic fever curve, headaches, prostration, myalgias, anorexia, N&V, conjunctivitis, lymphadenopathy; death may result from hemorrhagic fever or encephalitis Mortality 5-20%. See Dengue.

Rift Valley fever

A disease occurring mainly in South Africa and caused by an arbovirus normally infecting sheep and goats. It is transmitted by mosquito bite and causes a DENGUE-like illness sometimes complicated by JAUNDICE, haemorrhages, RETINOPATHY and MENINGOENCEPHALITIS. There is no specific treatment.
AcronymsSeeRVF

Rift Valley fever


  • noun

Words related to Rift Valley fever

noun an infection common in Africa caused by a bunyavirus

Related Words

  • haemorrhagic fever
  • hemorrhagic fever
  • VHF
  • viral haemorrhagic fever
  • viral hemorrhagic fever
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更新时间:2025/1/31 3:20:06