I. Livestock-research-institute, . Nairobi, E. Kenya, A. J. Elizabeth, W. A. Cook et al., International Livestock Research Institute, mails: ssdahir1@yahoo.com and jricht@vet.k-state.edu. Gary L

H. Salah, U. Khan, H. R. Merrill, and M. L. Merrill, E-mail: glheil@ehs .ufl

B. Bird, T. Ksiazek, S. Nichol, and N. Maclachlan, Rift Valley fever virus, Journal of the American Veterinary Medical Association, vol.234, issue.7, pp.883-893, 2009.
DOI : 10.2460/javma.234.7.883

URL : https://hal.archives-ouvertes.fr/hal-00903196

R. Daubney, J. Hudson, and P. Garnham, Enzootic hepatitis or rift valley fever. An undescribed virus disease of sheep cattle and man from east africa, The Journal of Pathology and Bacteriology, vol.xcix, issue.4, pp.545-579, 1931.
DOI : 10.1002/path.1700340418

P. Nguku, S. Sharif, D. Mutonga, S. Amwayi, J. Omolo et al., An investigation of a major outbreak of Rift Valley fever in Kenya, Am J Trop Med Hyg, vol.83, pp.2006-2007, 2010.

A. Anyangu, L. Gould, S. Sharif, P. Nguku, J. Omolo et al., Risk Factors for Severe Rift Valley Fever Infection in Kenya, 2007, The American Journal of Tropical Medicine and Hygiene, vol.83, issue.2_Suppl, pp.14-21, 2007.
DOI : 10.4269/ajtmh.2010.09-0293

S. Andriamandimby, A. Randrianarivo-solofoniaina, E. Jeanmaire, L. Ravololomanana, L. Razafimanantsoa et al., Rift Valley Fever during Rainy Seasons, Madagascar, 2008 and 2009, Emerging Infectious Diseases, vol.16, issue.6, pp.963-970, 2008.
DOI : 10.3201/eid1606.091266

URL : https://hal.archives-ouvertes.fr/pasteur-00595482

J. Morvan, J. Saluzzo, D. Fontenille, P. Rollin, and P. Coulanges, Rift valley fever on the east coast of Madagascar, Research in Virology, vol.142, issue.6, pp.475-482, 1991.
DOI : 10.1016/0923-2516(91)90070-J

J. Morvan, P. Rollin, S. Laventure, I. Rakotoarivony, and J. Roux, Rift Valley fever epizootic in the central highlands of Madagascar, Research in Virology, vol.143, pp.407-415, 1992.
DOI : 10.1016/S0923-2516(06)80134-2

A. Evans, F. Gakuya, J. Paweska, M. Rostal, L. Akoolo et al., Prevalence of antibodies against Rift Valley fever virus in Kenyan wildlife, Epidemiology and Infection, vol.22, issue.09, pp.1261-1269, 2008.
DOI : 10.20506/rst.22.3.1436

A. Labeaud, P. Cross, W. Getz, A. Glinka, and C. King, Rift Valley Fever Virus Infection in African Buffalo (Syncerus caffer) Herds in Rural South Africa: Evidence of Interepidemic Transmission, The American Journal of Tropical Medicine and Hygiene, vol.84, issue.4, pp.641-646, 2011.
DOI : 10.4269/ajtmh.2011.10-0187

A. Labeaud, E. Muchiri, M. Ndzovu, M. Mwanje, S. Muiruri et al., Interepidemic Rift Valley Fever Virus Seropositivity, Northeastern Kenya, Emerging Infectious Diseases, vol.14, issue.8, pp.1240-1246, 2008.
DOI : 10.3201/eid1408.080082

A. Labeaud, S. Muiruri, L. Sutherland, S. Dahir, G. Gildengorin et al., Postepidemic Analysis of Rift Valley Fever Virus Transmission in Northeastern Kenya: A Village Cohort Study, PLoS Neglected Tropical Diseases, vol.58, issue.8, p.1265, 2011.
DOI : 10.1371/journal.pntd.0001265.s003

A. Labeaud, Y. Ochiai, C. Peters, E. Muchiri, and C. King, Spectrum of Rift Valley fever virus transmission in Kenya: insights from three distinct regions, Am J Trop Med Hyg, vol.76, pp.795-800, 2007.

S. Muiruri, E. Kabiru, E. Muchiri, H. Hussein, F. Kagondu et al., Cross-sectional survey of Rift Valley fever virus exposure in Bodhei Village, 2014.

J. Antonovics, M. Hood, and C. Baker, Was the 1918 flu avian in origin?, Nature, vol.5, issue.7088, pp.9-10, 2006.
DOI : 10.1093/bib/5.2.150

P. Webb, K. Johnson, and R. Mackenzie, The Measurement of Specific Antibodies in Bolivian Hemorrhagic Fever by Neutralization of Virus Plaques, Experimental Biology and Medicine, vol.130, issue.3, pp.1013-1019, 1969.
DOI : 10.3181/00379727-130-33711

E. Earley, P. Peralta, and K. Johnson, A Plaque Neutralization Method for Arboviruses, Experimental Biology and Medicine, vol.125, issue.3, pp.741-747, 1967.
DOI : 10.3181/00379727-125-32194

J. Paweska, F. Burt, and R. Swanepoel, Validation of IgG-sandwich and IgM-capture ELISA for the detection of antibody to Rift Valley fever virus in humans, Journal of Virological Methods, vol.124, issue.1-2, pp.173-181, 2005.
DOI : 10.1016/j.jviromet.2004.11.020

V. Chevalier, M. Pepin, L. Plee, and L. R. , Rift Valley fever?a threat for Europe?, Euro Surveill, vol.15, pp.18-28, 2010.

A. Rolin, L. Berrang-ford, and M. Kulkarni, The risk of Rift Valley fever virus introduction and establishment in the United States and European Union, Emerging Microbes & Infections, vol.2009, issue.12, p.81, 2013.
DOI : 10.3201/eid0602.000202

D. Hartley, J. Rinderknecht, T. Nipp, N. Clarke, and G. Snowder, National Center for Foreign Animal and Zoonotic Disease Defense Advisory Group on Rift Valley Fever, 2011. Potential effects of Rift Valley fever in the United States, Emerg Infect Dis, vol.17, p.1

Z. Memish, M. Masri, B. Anderson, G. Heil, H. Merrill et al., Elevated Antibodies Against Rift Valley Fever Virus Among Humans with Exposure to Ruminants in Saudi Arabia, The American Journal of Tropical Medicine and Hygiene, vol.92, issue.4, pp.739-743, 2015.
DOI : 10.4269/ajtmh.14-0575