Volume 92, Issue 2
  • ISSN: 0002-9637
  • E-ISSN: 1476-1645



Few studies have focused on Rift Valley fever virus (RVFV) transmission in less arid, transitional landscapes surrounding known high-risk regions. The objective of this study was to identify evidence of RVFV exposure in Bodhei Village in a forested area at the edge of the RVFV-epidemic Garissa region. In a household cluster-based survey conducted between epidemics in early 2006, 211 participants were enrolled. Overall seroprevalence for anti-RVFV was high (18%) and comparable with rates in the more arid, dense brush regions farther north. Seroprevalence of adults was 28%, whereas that of children was significantly lower (3%; < 0.001); the youngest positive child was age 3 years. Males were more likely to be seropositive than females (25% versus 11%; < 0.01), and animal husbandry activities (birthing, sheltering, and butchering) were strongly associated with seropositivity. The results confirm that significant RVFV transmission occurs outside of recognized high-risk areas and independent of known epidemic periods.


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  1. Ksiazek TG, Jouan A, Meegan JM, Le Guenno B, Wilson ML, Peters CJ, Digoutte JP, Guillaud M, Merzoug NO, Touray EM, , 1989. Rift Valley fever among domestic animals in the recent West African outbreak. Res Virol 140: 6777.[Crossref] [Google Scholar]
  2. Anyangu AS, Gould LH, Sharif SK, Nguku PM, Omolo J, Mutonga D, Rao CY, Lederman E, Schnabel DC, Paweska JT, Katz M, Hightower A, Njenga MK, Feikin DR, Breiman RF, , 2010. Risk factors for severe Rift Valley fever infection in Kenya, 2007. Am J Trop Med Hyg 83 (2 Suppl): 1421.[Crossref] [Google Scholar]
  3. Kahlon SS, Peters CJ, Leduc J, Muchiri EM, Muiruri S, Njenga MK, Breiman RF, Clinton White A, Jr King CH, , 2010. Severe Rift Valley fever may present with a characteristic clinical syndrome. Am J Trop Med Hyg 82: 371375.[Crossref] [Google Scholar]
  4. CDC, 2007. Rift Valley fever outbreak–Kenya, November 2006–January 2007. MMWR Morb Mortal Wkly Rep 56: 7376. [Google Scholar]
  5. Hartley DM, Rinderknecht JL, Nipp TL, Clarke NP, Snowder GD, 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 17: e1. [Google Scholar]
  6. Daubney R, Hudson JR, Garnham PC, , 1931. Enzootic hepatitis or Rift Valley fever: an undescribed virus disease of sheep, cattle and man from East Africa. J Pathol Bacteriol 34: 545579.[Crossref] [Google Scholar]
  7. Clements AC, Pfeiffer DU, Martin V, Otte MJ, , 2007. A Rift Valley fever atlas for Africa. Prev Vet Med 82: 7282.[Crossref] [Google Scholar]
  8. Davies FG, Linthicum KJ, James AD, , 1985. Rainfall and epizootic Rift Valley fever. Bull World Health Organ 63: 941943. [Google Scholar]
  9. Linthicum KJ, Anyamba A, Tucker CJ, Kelley PW, Myers MF, Peters CJ, , 1999. Climate and satellite indicators to forecast Rift Valley fever epidemics in Kenya. Science 285: 397400.[Crossref] [Google Scholar]
  10. Hightower A, Kinkade C, Nguku PM, Anyangu A, Mutonga D, Omolo J, Njenga MK, Feikin DR, Schnabel D, Ombok M, Breiman RF, , 2012. Relationship of climate, geography, and geology to the incidence of Rift Valley fever in Kenya during the 2006–2007 outbreak. Am J Trop Med Hyg 86: 373380.[Crossref] [Google Scholar]
  11. Munyua P, Murithi RM, Wainwright S, Githinji J, Hightower A, Mutonga D, Macharia J, Ithondeka PM, Musaa J, Breiman RF, Bloland P, Njenga MK, , 2010. Rift Valley fever outbreak in livestock in Kenya, 2006–2007. Am J Trop Med Hyg 83 (2 Suppl): 5864.[Crossref] [Google Scholar]
  12. LaBeaud AD, Muchiri EM, Ndzovu M, Mwanje MT, Muiruri S, Peters CJ, King CH, , 2008. Interepidemic Rift Valley fever virus seropositivity, northeastern Kenya. Emerg Infect Dis 14: 12401246.[Crossref] [Google Scholar]
  13. LaBeaud AD, Ochiai Y, Peters CJ, Muchiri EM, King CH, , 2007. Spectrum of Rift Valley fever virus transmission in Kenya: insights from three distinct regions. Am J Trop Med Hyg 76: 795800. [Google Scholar]
  14. Niklasson B, Grandien M, Peters CJ, Gargan TP, , 1983. Detection of Rift Valley fever virus antigen by enzyme-linked immunosorbent assay. J Clin Microbiol 17: 10261031. [Google Scholar]
  15. Kruska A, Kariuki P, , 2007. International Livestock Research Institute GIS Database. Available at: http://www.ilri.org/gis. Accessed June 20, 2014. [Google Scholar]
  16. LaBeaud AD, Muiruri S, Sutherland LJ, Dahir S, Gildengorin G, Morrill J, Muchiri EM, Peters CJ, King CH, , 2011. Postepidemic analysis of Rift Valley fever virus transmission in northeastern Kenya: a village cohort study. PLoS Negl Trop Dis 5: e1265.[Crossref] [Google Scholar]
  17. Woods CW, Karpati AM, Grein T, McCarthy N, Gaturuku P, Muchiri E, Dunster L, Henderson A, Khan AS, Swanepoel R, Bonmarin I, Martin L, Mann P, Smoak BL, Ryan M, Ksiazek TG, Arthur RR, Ndikuyeze A, Agata NN, Peters CJ, WHO Hemorrhagic Fever Task Force; , 2002. An outbreak of Rift Valley fever in Northeastern Kenya, 1997–98. Emerg Infect Dis 8: 138144.[Crossref] [Google Scholar]
  18. Al-Hazmi A, Al-Rajhi AA, Abboud EB, Ayoola EA, Al-Hazmi M, Saadi R, Ahmed N, , 2005. Ocular complications of Rift Valley fever outbreak in Saudi Arabia. Ophthalmology 112: 313318.[Crossref] [Google Scholar]
  19. Riou O, Philippe B, Jouan A, Coulibaly I, Mondo M, Digoutte JP, , 1989. Neurologic and neurosensory forms of Rift Valley fever in Mauritania. Bull Soc Pathol Exot 82: 605610. [Google Scholar]
  20. Davies FG, , 2010. The historical and recent impact of Rift Valley fever in Africa. Am J Trop Med Hyg 83 (2 Suppl): 7374.[Crossref] [Google Scholar]
  21. Murithi RM, Munyua P, Ithondeka PM, Macharia JM, Hightower A, Luman ET, Breiman RF, Njenga MK, , 2011. Rift Valley fever in Kenya: history of epizootics and identification of vulnerable districts. Epidemiol Infect 139: 372380.[Crossref] [Google Scholar]
  22. LaBeaud AD, Cross PC, Getz WM, Glinka A, King CH, , 2011. Rift Valley fever virus infection in African buffalo (Syncerus caffer) herds in rural South Africa: evidence of interepidemic transmission. Am J Trop Med Hyg 84: 641646.[Crossref] [Google Scholar]
  23. Anyamba A, Chretien JP, Small J, Tucker CJ, Formenty PB, Richardson JH, Britch SC, Schnabel DC, Erickson RL, Linthicum KJ, , 2009. Prediction of a Rift Valley fever outbreak. Proc Natl Acad Sci USA 106: 955959.[Crossref] [Google Scholar]
  24. Consultative Group for RVF Decision Support, 2010. Decision-support tool for prevention and control of Rift Valley fever epizootics in the greater Horn of Africa. Am J Trop Med Hyg 83 (Suppl 2): 7585. [Google Scholar]

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  • Received : 14 Jul 2014
  • Accepted : 23 Nov 2014
  • Published online : 04 Feb 2015

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