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Eric Cardinale - One of the best experts on this subject based on the ideXlab platform.
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Towards a better understanding of Rift Valley Fever epidemiology in the south-west of the Indian Ocean.
Veterinary Research, 2013Co-Authors: Thomas Balenghien, Thiery Jean Jose Nipomichene, Gaelle Nicolas, Vincent Rakotoharinome, Matthieu Roger, Véronique Chevalier, Nohal Elissa, Anna-bella Failloux, Eric Cardinale, Betty ZumboAbstract:: Rift Valley Fever virus (Phlebovirus, Bunyaviridae) is an arbovirus causing intermittent epizootics and sporadic epidemics primarily in East Africa. Infection causes severe and often fatal illness in young sheep, goats and cattle. Domestic animals and humans can be contaminated by close contact with infectious tissues or through mosquito infectious bites. Rift Valley Fever virus was historically restricted to sub-Saharan countries. The probability of Rift Valley Fever emerging in virgin areas is likely to be increasing. Its geographical range has extended over the past years. As a recent example, autochthonous cases of Rift Valley Fever were recorded in 2007--2008 in Mayotte in the Indian Ocean. It has been proposed that a single infected animal that enters a naive country is sufficient to initiate a major outbreak before Rift Valley Fever virus would ever be detected. Unless vaccines are available and widely used to limit its expansion, Rift Valley Fever will continue to be a critical issue for human and animal health in the region of the Indian Ocean.
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Towards a better understanding of Rift Valley Fever epidemiology in the south-west of the
2013Co-Authors: Eric Cardinale, Gaelle Nicolas, Matthieu Roger, Véronique Chevalier, Nohal Elissa, Anna-bella Failloux, Thiery Nirina, Jean Jose, Vincent Michel, Betty ZumboAbstract:Rift Valley Fever virus (Phlebovirus ,B unyaviridae) is an arbovirus causing intermittent epizootics and sporadic epidemics primarily in East Africa. Infection causes severe and often fatal illness in young sheep, goats and cattle. Domestic animals and humans can be contaminated by close contact with infectious tissues or through mosquito infectious bites. Rift Valley Fever virus was historically restricted to sub-Saharan countries. The probability of Rift Valley Fever emerging in virgin areas is likely to be increasing. Its geographical range has extended over the past years. As a recent example, autochthonous cases of Rift Valley Fever were recorded in 2007–2008 in Mayotte in the Indian Ocean. It has been proposed that a single infected animal that enters a naive country is sufficient to initiate a major outbreak before Rift Valley Fever virus would ever be detected. Unless vaccines are available and widely used to limit its expansion, Rift Valley Fever will continue to be a critical issue for human and animal health in the region of the Indian Ocean.
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Prevalence of Rift Valley Fever among ruminants, Mayotte
Emerging Infectious Diseases, 2012Co-Authors: Catherine Cêtre-sossah, Aurélie Pedarrieu, Cédric Defernez, Sébastien Girard, Michele Bouloy, Jacques Favre, Helene Guis, Eric Cardinale, Emmanuel AlbinaAbstract:Rift Valley Fever threatens human and animal health. After a human case was confirmed in Comoros in 2007, 4 serosurveys among ruminants in Mayotte suggested that Rift Valley Fever virus had been circulating at low levels since 2004, although no clinical cases occurred in animals. Entomologic and ecologic studies will help determine outbreak potential.
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Genome analysis of Rift Valley Fever virus, Mayotte.
Emerging Infectious Diseases, 2012Co-Authors: Catherine Cêtre-sossah, Michele Bouloy, Eric Cardinale, Hervé Zeller, Marc Grandadam, Valérie Caro, François Pettinelli, Emmanuel AlbinaAbstract:As further confirmation of a first human case of Rift Valley Fever in 2007 in Comoros, we isolated Rift Valley Fever virus in suspected human cases. These viruses are genetically closely linked to the 2006–2007 isolates from Kenya.
Betty Zumbo - One of the best experts on this subject based on the ideXlab platform.
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Towards a better understanding of Rift Valley Fever epidemiology in the south-west of the Indian Ocean.
Veterinary Research, 2013Co-Authors: Thomas Balenghien, Thiery Jean Jose Nipomichene, Gaelle Nicolas, Vincent Rakotoharinome, Matthieu Roger, Véronique Chevalier, Nohal Elissa, Anna-bella Failloux, Eric Cardinale, Betty ZumboAbstract:: Rift Valley Fever virus (Phlebovirus, Bunyaviridae) is an arbovirus causing intermittent epizootics and sporadic epidemics primarily in East Africa. Infection causes severe and often fatal illness in young sheep, goats and cattle. Domestic animals and humans can be contaminated by close contact with infectious tissues or through mosquito infectious bites. Rift Valley Fever virus was historically restricted to sub-Saharan countries. The probability of Rift Valley Fever emerging in virgin areas is likely to be increasing. Its geographical range has extended over the past years. As a recent example, autochthonous cases of Rift Valley Fever were recorded in 2007--2008 in Mayotte in the Indian Ocean. It has been proposed that a single infected animal that enters a naive country is sufficient to initiate a major outbreak before Rift Valley Fever virus would ever be detected. Unless vaccines are available and widely used to limit its expansion, Rift Valley Fever will continue to be a critical issue for human and animal health in the region of the Indian Ocean.
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Towards a better understanding of Rift Valley Fever epidemiology in the south-west of the
2013Co-Authors: Eric Cardinale, Gaelle Nicolas, Matthieu Roger, Véronique Chevalier, Nohal Elissa, Anna-bella Failloux, Thiery Nirina, Jean Jose, Vincent Michel, Betty ZumboAbstract:Rift Valley Fever virus (Phlebovirus ,B unyaviridae) is an arbovirus causing intermittent epizootics and sporadic epidemics primarily in East Africa. Infection causes severe and often fatal illness in young sheep, goats and cattle. Domestic animals and humans can be contaminated by close contact with infectious tissues or through mosquito infectious bites. Rift Valley Fever virus was historically restricted to sub-Saharan countries. The probability of Rift Valley Fever emerging in virgin areas is likely to be increasing. Its geographical range has extended over the past years. As a recent example, autochthonous cases of Rift Valley Fever were recorded in 2007–2008 in Mayotte in the Indian Ocean. It has been proposed that a single infected animal that enters a naive country is sufficient to initiate a major outbreak before Rift Valley Fever virus would ever be detected. Unless vaccines are available and widely used to limit its expansion, Rift Valley Fever will continue to be a critical issue for human and animal health in the region of the Indian Ocean.
Vincent Pierre - One of the best experts on this subject based on the ideXlab platform.
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Rift Valley Fever mayotte 2007 2008
Emerging Infectious Diseases, 2009Co-Authors: Daouda Sissoko, François Pettinelli, Claude Giry, Philippe Gabrie, Arnaud Tarantola, Louis Collet, P. Renault, Eric Dortenzio, Vincent PierreAbstract:After the 2006–2007 epidemic wave of Rift Valley Fever (RVF) in East Africa and its circulation in the Comoros, laboratory case-finding of RVF was conducted in Mayotte from September 2007 through May 2008. Ten recent human RVF cases were detected, which confirms the indigenous transmission of RFV virus in Mayotte.
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Rift Valley Fever, Mayotte, 2007–2008
Emerging Infectious Diseases, 2009Co-Authors: Daouda Sissoko, François Pettinelli, Claude Giry, Philippe Gabrie, Arnaud Tarantola, Louis Collet, E. D’ortenzio, P. Renault, Vincent PierreAbstract:After the 2006–2007 epidemic wave of Rift Valley Fever (RVF) in East Africa and its circulation in the Comoros, laboratory case-finding of RVF was conducted in Mayotte from September 2007 through May 2008. Ten recent human RVF cases were detected, which confirms the indigenous transmission of RFV virus in Mayotte.
Charles H King - One of the best experts on this subject based on the ideXlab platform.
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Postepidemic Analysis of Rift Valley Fever Virus Transmission in Northeastern Kenya: A Village Cohort Study
PLoS Neglected Tropical Diseases, 2011Co-Authors: A. Desiree Labeaud, Clarence J. Peters, Eric M Muchiri, Samuel Muiruri, Laura J. Sutherland, Saidi Dahir, Ginny Gildengorin, John C. Morrill, Charles H KingAbstract:Background In endemic areas, Rift Valley Fever virus (RVFV) is a significant threat to both human and animal health. Goals of this study were to measure human anti-RVFV seroprevalence in a high-risk area following the 2006–2007 Kenyan Rift Valley Fever (RVF) epidemic, to identify risk factors for interval seroconversion, and to monitor individuals previously exposed to RVFV in order to document the persistence of their anti-RVFV antibodies.
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Advances in Rift Valley Fever research: insights for disease prevention
Current Opinion in Infectious Diseases, 2010Co-Authors: Angelle Desiree Labeaud, James W. Kazura, Charles H KingAbstract:Purpose of reviewThe purpose was to review recent research on Rift Valley Fever virus (RVFV) infection, encompassing four main areas: epidemiology and outbreak prediction, viral pathogenesis, human diagnostics and therapeutics, and vaccine and therapeutic candidates.Recent findingsRVFV continues to
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interepidemic Rift Valley Fever virus seropositivity northeastern kenya
Emerging Infectious Diseases, 2008Co-Authors: Desiree Labeaud, Clarence J. Peters, Eric M Muchiri, Malik Ndzovu, Mariam T Mwanje, Samuel Muiruri, Charles H KingAbstract:Most outbreaks of Rift Valley Fever (RVF) occur in remote locations after floods. To determine environmental risk factors and long-term sequelae of human RVF, we examined rates of previous Rift Valley Fever virus (RVFV) exposure by age and location during an interepidemic period in 2006. In a randomized household cluster survey in 2 areas of Ijara District, Kenya, we examined 248 residents of 2 sublocations, Gumarey (village) and Sogan-Godud (town). Overall, the RVFV seropositivity rate was 13% according to immunoglobulin G ELISA; evidence of interepidemic RVFV transmission was detected. Increased seropositivity was found among older persons, those who were male, those who lived in the rural village (Gumarey), and those who had disposed of animal abortus. Rural Gumarey reported more mosquito and animal exposure than Sogan-Godud. Seropositive persons were more likely to have visual impairment and retinal lesions; other physical findings did not differ.
Hervé Zeller - One of the best experts on this subject based on the ideXlab platform.
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Genome analysis of Rift Valley Fever virus, Mayotte.
Emerging Infectious Diseases, 2012Co-Authors: Catherine Cêtre-sossah, Michele Bouloy, Eric Cardinale, Hervé Zeller, Marc Grandadam, Valérie Caro, François Pettinelli, Emmanuel AlbinaAbstract:As further confirmation of a first human case of Rift Valley Fever in 2007 in Comoros, we isolated Rift Valley Fever virus in suspected human cases. These viruses are genetically closely linked to the 2006–2007 isolates from Kenya.
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New vectors of Rift Valley Fever in West Africa.
Emerging Infectious Diseases, 1998Co-Authors: Didier Fontenille, Mawlouth Diallo, Moumouni Traore-lamizana, J. Thonnon, J. P. Digoutte, Hervé ZellerAbstract:After an outbreak of Rift Valley Fever in Southern Mauritania in 1987, entomologic studies were conducted in a bordering region in Senegal from 1991 to 1996 to identify the sylvatic vectors of Rift Valley Fever virus. The virus was isolated from the floodwater mosquitoes Aedes vexans and Ae. ochraceus. In 1974 and 1983, the virus had been isolated from Ae. dalzieli. Although these vectors differ from the main vectors in East and South Africa, they use the same type of breeding sites and also feed on cattle and sheep. Although enzootic vectors have now been identified in West Africa, the factors causing outbreaks remain unclear.
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enzootic activity of Rift Valley Fever virus in senegal
American Journal of Tropical Medicine and Hygiene, 1997Co-Authors: Hervé Zeller, Yaya Thiongane, Didier Fontenille, Moumouni Traorelamizana, J. P. DigoutteAbstract:Abstract In two areas of Senegal where previous evidence of Rift Valley Fever (RVF) virus circulation was detected, Barkedji in the Sahelian bioclimatic zone and Kedougou in the Sudano-Guinean zone, a longitudinal study of the enzootic maintenance of RVF virus was undertaken from 1991 to 1993. Mosquitoes, sand flies, and ticks were collected and domestic ungulates were monitored with serologic surveys. Rift Valley Fever virus was not isolated in Kedougou. In Barkedji, RVF virus was isolated from Aedes vexans and Ae. ochraceus mosquitoes collected in traps near ground pools and cattle droves and from one healthy sheep. Sand flies were not involved in the maintenance cycle. Seroconversions were recorded in three (1.9%) of 160 monitored sheep and goats. The interepizootic vectors appeared to belong to the Aedes subgenus Neomelaniconion in East Africa, and to the subgenus Aedimorphus in West Africa. Epizootics in East Africa are associated with an increase in rainfall. However, factors associated with epizootics remain unknown for West Africa.
