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Key Points. Rift Valley fever is a vector-borne zoonotic disease with potential for global transmission. Abortions and death in domestic ruminants associated with heavy rainfall and flooding should suggest the possibility of RVF, particularly if influenza-like symptoms occur concurrently in humans.
Coccidioidomycosis (valley fever) is a dustborne, noncontagious infection due to Coccidioides spp fungi. These fungi form mycelial mats in shallow arid soil; the mycelium fragments form arthrospores.
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May 14, 2024 · Overview. Rift Valley fever (RVF) is caused by Rift Valley fever virus, which is found in most of sub-Saharan Africa, especially eastern and southern Africa. Rift Valley fever virus is carried by mosquitoes and can spread to people and animals, including cows, buffalo, sheep, goats, and camels.
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What is Rift Valley fever?
- What Is Rift Valley Fever (Rvf)?
- Vector Transmission and Spread
- Public Health Risk
- Clinical Signs in Animals
- Diagnostics
- Prevention and Control
- Geographical Distribution
- Regional Activities in Africa
Rift Valley fever (RVF) is an acute arthropod-borne viral disease that can cause severe disease in domestic animals, such as buffalo, camels, cattle, goats, and sheep. Rift Valley fever is also an important zoonosis that can cause severe disease in humans. Disease in susceptible animals can vary in severity and is characterized by fever, listlessne...
Several different species of mosquitoes are competent vectors for the RVF virus, and rises in incidence of RVF most commonly occur after periods of heavy rainfall which lead to an abundance of mosquitoes. Competent mosquito vectors transmit virus from infected animals to other animals (and to humans). Some species of mosquito (Aedes, for example) a...
Rift Valley fever (RVF) is a viral zoonosis that primarily affects animals but also has the capacity to infect humans. The majority of human infections result from direct or indirect contact with the blood or organs of infected animals. The virus can be transmitted to humans through the handling of animal tissue during slaughtering or butchering, a...
Clinical signs vary depending on the species of animal affected, age, and whether the animal is pregnant. Young lambs and goats (kids) are considered to be the most susceptible with mortality rates of 70-100%. Sheep and calves are highly susceptible with mortality rates of 20%-70%. Moderately susceptible species (with mortality rates of less than 1...
In areas where the disease is known to occur, RVF may be suspected based on clinical signs, insect activity, concurrent disease in animals and humans, rapid spread of the disease and concurrent contributing environmental factors. Laboratory tests are required to confirm Rift Valley fever infections (WOAH Manual of Diagnostic Tests and Vaccines for ...
RVF is a regional problem and cooperation between neighbouring countries is essential for surveillance, prevention and control. Essential elements for prevention and control of RVF include systematic ongoing surveillance in sentinel animals to monitor RVF infections in susceptible animals; immediate notification of clinical cases upon detection (in...
For the most recent information on the reported distribution of Rift Valley fever in animals visit the WOAH’s World Animal Health Information Database. To date, RVF is endemic in many sub-Saharan African countries (including Madagascar) and may involve several countries in the region at the same time or progressively expand geographically over the ...
Sep 29, 2022 · Rift Valley Fever is a viral disease of cattle and sheep that was first discovered in the Rift Valley of Kenya. The disease is spread to livestock through the bite of infected mosquitoes during years of heavy rainfall. The disease causes high death rates in young animals and abortions in older animals.
Jan 26, 2021 · Rift Valley fever (RVF) is a zoonotic, vector-borne infectious disease of ruminants and camels transmitted mainly by the Aedes and Culex mosquito species. Contact with the blood or organs of infected animals may infect humans. Its etiological factor is the Rift Valley fever virus (RVFV) of the Phlebovirus genus and Bunyaviridae family.
Rift Valley fever is a viral disease that affects sheep, goats and camels and cattle resulting in abortion and deaths in young animals. It also affects humans. This film explains the the signs of Rift Valley fever in animals and ways of preventing and controlling the disease.
