PLOS 09/01/17 Phylogeography of Rift Valley Fever Virus in Africa and the Arabian Peninsula. Abstract Rift Valley Fever is an acute zoonotic viral disease caused by Rift Valley Fever virus (RVFV) that affects ruminants and humans in Sub-Saharan Africa and the Arabian Peninsula.
We used phylogenetic analyses to understand the demographic history of RVFV populations, using sequence data from the three minigenomic segments of the virus. We used phylogeographic approaches to infer RVFV historical movement patterns across its geographic range, and to reconstruct transitions among host species. PLoS Negl Trop Dis. 09/01/17 Phylogeography of Rift Valley Fever Virus in Africa and the Arabian Peninsula.
MAAF/ANSES - JUIN 2016 - Numéro 74 Bulletin épidémiologique. Au sommaire: Situation épidémiologique de la fièvre de la Vallée du Rift en Afrique de l’Ouest et du Nord; EMERGING MICROBES & INFECTIONS 22/06/16 Has Rift Valley fever virus evolved with increasing severity in human populations in East Africa? Citation: Emerging Microbes & Infections (2016) 5, e58; doi:10.1038/emi.2016.57Published online 22 June 2016 Top of page Introduction Rift Valley fever (RVF), caused by the Rift Valley fever virus (RVFV; genus: Phlebovirus, family: Bunyaviridae), is an arboviral disease primarily of domesticated animals that also causes mild to life-threatening disease in humans.
The virus is a negative-sense, single-stranded RNA virus, and its name is derived from the Great Rift Valley of Kenya, where the disease was first recognized and characterized in 19121 and first described in 1931 after a highly fatal epizootic in Kenya in 1930.2 Subsequently, RVF epizootics/epidemics have occurred (Figure 1) in 4–15-year cycles in association with flooding above the normal rainfall in many flood-prone habitats.3 Figure 1. Map of eastern African countries indicating frequencies of major RVF outbreaks over the past century (1912–2010). Full figure and legend (140K) History Ecological factors Climatic factors Figure 2. OIE 04/11/14 “9ème réunion du Comité Permanent conjoint du REMESA” Tunis, Tunisie 03 au 04 novembre 2014. Au sommaire notamment: Vers une stratégie maghrébine de surveillance et de lutte contre la fièvre de la Vallée du Rift.
ROYAL SOCIETY 18/03/15 Enemies and turncoats: bovine tuberculosis exposes pathogenic potential of Rift Valley fever virus in a common host, African buffalo (Syncerus caffer) Authors e-mail: firstname.lastname@example.org Abstract The ubiquity and importance of parasite co-infections in populations of free-living animals is beginning to be recognized, but few studies have demonstrated differential fitness effects of single infection versus co-infection in free-living populations.
We investigated interactions between the emerging bacterial disease bovine tuberculosis (BTB) and the previously existing viral disease Rift Valley fever (RVF) in a competent reservoir host, African buffalo, combining data from a natural outbreak of RVF in captive buffalo at a buffalo breeding facility in 2008 with data collected from a neighbouring free-living herd of African buffalo in Kruger National Park.
RVF infection was twice as likely in individual BTB+ buffalo as in BTB− buffalo, which, according to a mathematical model, may increase RVF outbreak size at the population level. 1. Emerging and native parasites can interact via the host immune system . 2. CDC EID - JANV 2016 – Au sommaire: Rift Valley Fever Virus among Wild Ruminants, Etosha National Park, Namibia, 2011. Andrea Capobianco Dondona ( , Ortwin Aschenborn, Chiara Pinoni, Luigina Di Gialleonardo, Adrianatus Maseke, Grazia Bortone, Andrea Polci, Massimo Scacchia, Umberto Molini, and Federica Monaco Author affiliations: Istituto Zooprofilattico Sperimentale dell’Abruzzo e del Molise “G.
Caporale,” Teramo, Italy (A. Capobianco Dondona, C. FRONTIERS IN VETERINARY SCIENCE 25/11/15 Serological Evidence of Rift Valley Fever Virus Circulation in Domestic Cattle and African Buffalo in Northern Botswana (2010–2011) Ferran Jori1,2*, Kathleen A.
LA NATION_DJ 22/04/15 Conférence OIE/FAO : Prévention et contrôle de la fièvre du rift: Vers un dépistage précoce de la fièvre de la vallée du rift. Une conférence interrégionale sur la prévention et le contrôle de la fièvre de la vallée du rift s’est ouverte hier au Sheraton.
Les délégations d’une vingtaine de pays de la région mais aussi des pays du golfe et de l’océan indien prennent part aux travaux de cette grand-messe interrégionale organisée par l’OIE en collaboration avec la FAO et le ministère de l’agriculture et de l’élevage. Durant les trois jours de conférences, les représentants des pays participants et les experts des organisations et agences concernées débattront des moyens de prévention et de lutte contre la fièvre de la vallée du rift et les options d’améliorations du commerce du bétail entre les pays de l’Afrique de l’Est, l’Océan Indien et la péninsule arabique.
La fièvre de la vallée du rift est une maladie prioritaire pour les pays de la région de l’IGAD parce que c’est une zoonose majeure susceptible d’occasionner des pertes en vie humaines mais aussi de par son impact sur le commerce du bétail. OIE - NOV 2012 - Economic impact of RVF outbreaks on trade within and between East Africa and Middle East. FRONTIERS IN PUBLIC HEALTH - 2014 - Recent Outbreaks of Rift Valley Fever in East Africa and the Middle East. 1Entomology Unit,, Faculty of Agriculture and Natural Resources, University of Kassala, P.O.
Box 71, New Halfa, Sudan., Sudan 2Division of Livestock and Human Diseases Vector Control, Tropical Pesticides Research Institute, Tanzania 3Department of Medical Parasitology and Entomology, Catholic University of Health and Allied Sciences, Tanzania 4Blue Nile National Institute for Communicable Diseases,, University of Gezira., Sudan 5Department of Zoology, University of Khartoum, Sudan 6Trypanosomiasis Research Centre, Kenya Agricultural Research Institute, Kenya 7Africa Technical Research Centre, Vector Health International, Tanzania Rift Valley fever (RVF) is an important neglected, emerging, mosquito-borne disease with severe negative impact on human and animal health.
Mosquitoes in the Aedes genus have been considered as the reservoir, as well as vectors, since their transovarially infected eggs with stand desiccation and larvae hatch when in contact with water. Edited by: Kenyatta University (Kenya) - 2009 - Thèse en ligne : Molecular Characterization of Rift Valley Fever Virus during the East Afri. VETERINARIA ITALIANA - 2007 - A Rift Valley fever risk surveillance system for Africa using remotely sended data: potential for.
CDC EID – DEC 2011 - Rift Valley and West Nile Virus Antibodies in Camels, North Africa. Skip directly to local search Skip directly to A to Z list Skip directly to navigation Skip directly to site content Skip directly to page options CDC Home CDC 24/7: Saving Lives.
PLOS 27/09/11 The 2007 Rift Valley Fever Outbreak in Sudan. Rift Valley fever (RVF) is a neglected, emerging, mosquito-borne disease with severe negative impact on human and animal health and economy.
RVF is caused by RVF virus (RVFV) affecting humans and a wide range of animals. The virus is transmitted through bites from mosquitoes and exposure to viremic blood, body fluids, or tissues of infected animals. During 2007 a large RVF outbreak occurred in Sudan with a total of 747 confirmed human cases including 230 deaths (case fatality 30.8%); although it has been estimated 75,000 were infected. Pathologic Studies on Suspect Animal and Human Cases of Rift Valley Fever from an Outbreak in Eastern Africa, 2006–2007.
Decision_SupportTool.pdf (Objet application/pdf) TD05-1.pdf (Objet application/pdf) Nouveaux vecteurs de la fièvre de la vallée du Rift en Afrique de l'Ouest. Heartland virus (HRTV) is a recently described phlebovirus initially isolated in 2009 from 2 humans who had leukopenia and thrombocytopenia. Serologic assessment of domestic and wild animal populations near the residence of 1 of these persons showed high exposure rates to raccoons, white-tailed deer, and horses. To our knowledge, no laboratory-based assessments of viremic potential of animals infected with HRTV have been performed. We experimentally inoculated several vertebrates (raccoons, goats, chickens, rabbits, hamsters, C57BL/6 mice, and interferon-α/β/γ receptor–deficient [Ag129]) mice with this virus.
All animals showed immune responses against HRTV after primary or secondary exposure. However, neutralizing antibody responses were limited. Future Medicine - Future Virology - 3(5):411 - Full Text. September 2008, Vol. 3, No. 5, Pages 411-417 , DOI 10.2217/174607188.8.131.521 † Author for correspondence Teams composed of local and international public health and veterinary officials and scientists were dispatched to various locations in Kenya and Tanzania to investigate the outbreak, identify risk factors, define principle mosquito vectors, provide clinical care and infection control, study the clinical syndrome and its sequelae, establish surveillance in livestock and wildlife, and assess economic impact. Health communication teams developed messages and disseminated them locally and nationally. For the 2006–2007 East African RVF outbreak to have occurred in humans, we postulate that a number of factors needed to coexist: Since 1998, the WHO has promoted a strategy of Integrated Disease Surveillance and Response (IDSR) to detect and respond to human outbreaks.
Financial & competing interests disclosure Writing assistance was utilized in the production of this manuscript.
Veterinary Research 2013, 44:78 Towards a better understanding of Rift Valley fever epidemiology in the south-west of the Indian.