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Effects of flood irrigation on the risk of selected zoonotic pathogens in an arid and semi-arid area in the eastern Kenya

Bett, Bernard (författare)
Int Livestock Res Inst, Nairobi, Kenya.
Said, Mohammed Y. (författare)
Int Livestock Res Inst, Nairobi, Kenya.
Sang, Rosemary (författare)
Kenya Govt Med Res Ctr, Nairobi, Kenya.
visa fler...
Bukachi, Salome (författare)
Univ Nairobi, Inst Anthropol Gender & African Studies, Nairobi, Kenya.
Wanyoike, Salome (författare)
Minist Agr, Dept Vet Serv, Nairobi, Kenya.
Kifugo, Shem C. (författare)
Int Livestock Res Inst, Nairobi, Kenya.
Otieno, Fredrick (författare)
Int Livestock Res Inst, Nairobi, Kenya.
Ontiri, Enoch (författare)
Int Livestock Res Inst, Nairobi, Kenya.
Njeru, Ian (författare)
Kenyatta Natl Hosp, Minist Publ Hlth & Sanitat, Div Dis Surveillance & Response, Nairobi, Kenya.
Lindahl, Johanna (författare)
Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Uppsala universitet,Institutionen för medicinsk biokemi och mikrobiologi,Int Livestock Res Inst, Nairobi, Kenya.;Swedish Univ Agr Sci, Dept Clin Sci, Uppsala, Sweden.,Institutionen för kliniska vetenskaper (KV),Department of Clinical Sciences,International Livestock Research Institute (ILRI),Uppsala University
Grace, Delia (författare)
Int Livestock Res Inst, Nairobi, Kenya.
visa färre...
Int Livestock Res Inst, Nairobi, Kenya Kenya Govt Med Res Ctr, Nairobi, Kenya. (creator_code:org_t)
 
PUBLIC LIBRARY SCIENCE, 2017
2017
Engelska.
Ingår i: PLOS ONE. - : PUBLIC LIBRARY SCIENCE. - 1932-6203. ; 12:5
  • Tidskriftsartikel (refereegranskat)
Abstract Ämnesord
Stäng  
  • To investigate the effects of irrigation on land cover changes and the risk of selected zoonotic pathogens, we carried out a study in irrigated, pastoral and riverine areas in the eastern Kenya. Activities implemented included secondary data analyses to determine land use and land cover (LULC) changes as well as human, livestock and wildlife population trends; entomological surveys to characterize mosquitoes population densities and species distribution by habitat and season; and serological surveys in people to determine the risk of Rift Valley fever virus (RVFV), West Nile fever virus (WNV), dengue fever virus (DFV), Leptospira spp. and Brucella spp. Results demonstrate a drastic decline in vegetation cover over R approximate to 25 years particularly in the irrigated areas where cropland increased by about 1,400% and non-farm land (under closed trees, open to closed herbaceous vegetation, bushlands and open trees) reduced by 30-100%. The irrigated areas had high densities of Aedes mcintoshi, Culexspp. and Mansonia spp. (important vectors for multiple arboviruses) during the wet and dry season while pastoral areas had high densities of Ae. tricholabis specifically in the wet season. The seroprevalences of RVFV, WNV and DFV were higher in the irrigated compared to the pastoral areas while those for Leptospira spp and Brucella spp. were higher in the pastoral compared to the irrigated areas. It is likely that people in the pastoral areas get exposed to Leptospira spp by using water fetched from reservoirs that are shared with livestock and wildlife, and to Brucella spp. by consuming raw or partially cooked animal source foods such as milk and meat. This study suggests that irrigation increases the risk of mosquito-borne infections while at the same time providing a protective effect against zoonotic pathogens that thrive in areas with high livestock population densities.

Ämnesord

MEDICAL AND HEALTH SCIENCES  -- Medical Biotechnology -- Medical Biotechnology (with a focus on Cell Biology (including Stem Cell Biology), Molecular Biology, Microbiology, Biochemistry or Biopharmacy) (hsv//eng)
MEDICIN OCH HÄLSOVETENSKAP  -- Medicinsk bioteknologi -- Medicinsk bioteknologi (med inriktning mot cellbiologi (inklusive stamcellsbiologi), molekylärbiologi, mikrobiologi, biokemi eller biofarmaci) (hsv//swe)
MEDICIN OCH HÄLSOVETENSKAP  -- Medicinsk bioteknologi (hsv//swe)
MEDICAL AND HEALTH SCIENCES  -- Medical Biotechnology (hsv//eng)
LANTBRUKSVETENSKAPER  -- Veterinärmedicin (hsv//swe)
AGRICULTURAL SCIENCES  -- Veterinary Science (hsv//eng)

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