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The purpose of this study is to find out how, why, and when Rift Valley Fever (RVF) spreads. Participants will be 250 adults and children, aged 1 year and older, from the Ijara District, Kenya. They will be given a questionnaire, undergo a medical examination that includes an eye exam, and have a 1-teaspoon sample of blood taken from a vein. Participation will take about 3 hours.
The objective of this research is to better define the extent and timing of Rift Valley Fever (RVF) virus transmission and its related chronic disease/infection attack rate, during an interepidemic period in a high-risk region that has seen repeated RVF outbreaks. The results will be used to develop and refine predictive algorithms for RVF Virus transmission, based on epidemiological, environmental, and remote sensing data, with the ultimate goal of providing improved early detection of significant RVF outbreaks. It is expected that the analysis of test-performance characteristics will determine the best use of serologic assays in Kenya's next RVF epizootic/epidemic. The primary outcome measure will be the current RVF-specific seropositivity profile for a cross-sectional survey population in Ijara District in northeast Kenya. The secondary outcome measures to be studied will be: 1) an assessment of the behavioral factors associated with risk of seropositivity (previous infection) in the study population; and 2) the association of selected long-term ophthalmological and clinical outcomes with seropositivity. The study design for this protocol involves questionnaire administration to consenting participants of Ijara District, followed by performance of medical exams, ophthalmologic exams, and phlebotomy on all participants. ELISA testing for RVF will then be performed on the blood samples obtained, and all ELISA screen-positive samples will have confirmatory testing by plaque-reduction neutralizing antibody testing.
Time Perspective: Prospective
Rift Valley Fever
National Institute of Allergy and Infectious Diseases (NIAID)
Published on BioPortfolio: 2014-08-27T03:46:18-0400
This study is to determine if a vaccine for Rift Valley Fever (RVF) is safe to give to humans. Rift Valley Fever is a disease carried by mosquitoes that can infect both animals and humans....
This study is to collect safety and immunogenicity data for an Rift Valley Fever (RVF) vaccine
This study is designed to determine the safety and immunogenicity of an inactivated Rift Valley Fever (RVF) Vaccine in adults
This will be a multi-visit study that will take approximately 3 hours in total. Up to 200 subjects from the BUMC Valley Fever and BUMC Dermatology clinics will be enrolled in this study an...
This is a Phase IV randomized, double-blinded, placebo-controlled study in 1000 individuals aged 18 years or older, with community acquired pneumonia (CAP) who meet all eligibility criteri...
Rift Valley fever (RVF) is a zoonotic disease caused by Rift Valley fever virus (RVFV) found in Africa and the Middle East. Outbreaks can cause extensive morbidity and mortality in humans and livestoc...
Rift Valley fever is a mosquito-borne zoonotic disease that affects domestic ruminants and humans. Culex flavivirus is an insect-specific flavivirus that naturally exists in field mosquito populations...
Rift Valley fever virus (RVFV) is an emerging arbovirus in Africa and the Arabian Peninsula, in which infection with RVFV poses a serious threat to humans and livestock globally. Approved treatments f...
Tanzania is among the Rift Valley fever (RVF) epizootic/endemic countries in sub Saharan Africa, where RVF disease outbreaks occur within a range of 3 to 17-year intervals. Detection of Rift Valley fe...
Rift Valley fever (RVF) is an ecologically complex emerging arboviral disease that causes significant illness in both livestock and people. This review article is designed to assist the reader in unde...
An acute infection caused by the RIFT VALLEY FEVER VIRUS, an RNA arthropod-borne virus, affecting domestic animals and humans. In animals, symptoms include HEPATITIS; abortion (ABORTION, VETERINARY); and DEATH. In humans, symptoms range from those of a flu-like disease to hemorrhagic fever, ENCEPHALITIS, or BLINDNESS.
A genus of the family BUNYAVIRIDAE comprising many viruses, most of which are transmitted by Phlebotomus flies and cause PHLEBOTOMUS FEVER. The type species is RIFT VALLEY FEVER VIRUS.
Infection with a fungus of the genus COCCIDIOIDES, endemic to the SOUTHWESTERN UNITED STATES. It is sometimes called valley fever but should not be confused with RIFT VALLEY FEVER. Infection is caused by inhalation of airborne, fungal particles known as arthroconidia, a form of FUNGAL SPORES. A primary form is an acute, benign, self-limited respiratory infection. A secondary form is a virulent, severe, chronic, progressive granulomatous disease with systemic involvement. It can be detected by use of COCCIDIOIDIN.
A mosquito-borne species of the PHLEBOVIRUS genus found in eastern, central, and southern Africa, producing massive hepatitis, abortion, and death in sheep, goats, cattle, and other animals. It also has caused disease in humans.
The geographic area of the Mekong Valley in general or when the specific country or countries are not indicated. Usually includes Cambodia, Indochina, and Laos.
Pediatrics is the general medicine of childhood. Because of the developmental processes (psychological and physical) of childhood, the involvement of parents, and the social management of conditions at home and at school, pediatrics is a specialty. With ...
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The term allergy is used to describe a response, within the body, to a substance, which is not necessarily harmful in itself, but results in an immune response and a reaction that causes symptoms and disease in a predisposed person, which in turn can cau...