Rift Valley fever


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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

a bunyavirus infection of Egypt and east Africa spread by mosquitoes or by handling infected sheep, buffalo, goats, camels, and cattle. Those individuals infected with RVF virus typically exhibit no symptoms or a mild illness that involves fever and abnormalities of the liver. It is characterized by abrupt fever, chills, headache, and generalized aching, followed by epigastric pain, anorexia, loss of taste, and photophobia. Retinitis may cause vision loss in 1% to 10% of cases. The disease is of short duration; recovery occurs typically after 2 days to a week and is usually complete. There is no specific treatment. A killed virus vaccine that provides protection for 2 years is available in the United States for those at risk, such as laboratory workers and veterinarians.

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.

Rift Valley fever

an acute infectious febrile disease of humans, cattle and sheep caused by a Phlebovirus and spread by biting insects, especially mosquitoes. Clinically there is high fever, incoordination and sudden death. Abortion is a common accompaniment. The autopsy findings include extensive hepatic necrosis. Initially reported in the Rift Valley in Kenya but is now epizootic throughout sub-Saharan Africa and has recently extended to Egypt, Madagascar, Mauritania and the Arabian peninsula. It has great potential for spread to other countries and is of concern because it is an important zoonosis.
References in periodicals archive ?
Mohamed M, Mosha F, Mghamba J, et al Epidemiologic and clinical aspects of a Rift Valley fever outbreak in humans in Tanzania, 2007.
Specifically, NAMRU-3 has succeeded in documenting Haemophilus influenza serotype b (Hib) as the major cause of childhood meningitis; discovering the emergence of brucellosis as a cause of acute fever in Egypt; identifying and mapping areas of risk for Rift Valley Fever (RVF) in Saudi Arabia; rapidly responding to several infections disease outbreaks, including RVF in Yemen and Saudi Arabia; eliminating waterborne salmonellosis in the Nile Delta; and preventing newborn sepsis in a hospital in Egypt.
Rift Valley fever (RVF) Virus usually exists in animal hosts.
Epidemiology of Rift Valley fever, CCHF, and Ngari viruses
Furthermore, in Kenya, even though a reporting system exist, such as a surveillance information delivery from local medical institution to a national level, a surveillance information on yellow fever and Rift Valley fever is not functioning.
According to Aarthi Narayanan, lead investigator of the study from Mason's National Center for Biodefense and Infectious Diseases, curcumin, found in turmeric, stopped the potentially deadly Rift Valley Fever virus from multiplying in infected cells.
12 of 2012, issued by Dr Rashid Ahmed bin Fahd, Minister of Environment and Water, will be applicable to importing of processed meat from the countries which have reported cases of foot and mouth disease and Rift Valley fever, said Assistant Undersecretary for Agricultural and Livestock Affairs said.
1999) found that Rift Valley fever outbreaks could be predicted up to 5 months in advance of outbreaks in East Africa.
Like WNV, Rift Valley fever (RVF) is another mosquito-borne virus that can be transmitted to humans--but RVF could be deadlier to humans because it is carried by many more mosquito species.
218) says that Rift Valley fever and the Ebola virus are linked to shifts from dry to above-average rainfall.
An outbreak of Rift Valley Fever is sweeping across east Africa in the wake of freak floods.