Agro-ecological features of the introduction and spread of the highly pathogenic avian influenza (HPAI) H5N1 in northern Nigeria

Cecchi, Giuliano and Ilemobade, Albert and Le Brun, Yvon and Hogerwerf, Lenny and Slingenbergh, Jan (2008) Agro-ecological features of the introduction and spread of the highly pathogenic avian influenza (HPAI) H5N1 in northern Nigeria. Geospatial health , 3 (1). pp. 7-16. ISSN 1970-7096

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Abstract

Nigeria was the first African country to report highly pathogenic avian influenza (HPAI) H5N1 virus outbreaks in February 2006 and has since been the most severely hit country in sub-Saharan Africa. A retrospective survey carried out towards the end of 2007, coupled with follow-up spatial analysis, support the notion that the H5N1 virus may have spread from rural areas of northern Nigeria near wetlands frequented by palaearctic migratory birds. Possibly, this could have happened already during November to December 2005, one or two months prior to the first officially reported outbreak in a commercial poultry farm (Kaduna state). It is plausible that backyard poultry played a more important role in the H5N1 propagation than thought previously. Farming landscapes with significant numbers of domestic ducks may have helped to bridge the geographical and ecological gap between the waterfowl in the wetlands and the densely populated poultry rich states in north-central Nigeria, where the virus had more sizeable, visible impact.

Item Type: Article
Uncontrolled Keywords: influenza A virus, H5N1 subtype, ducks, poultry, wetlands, Nigeria
Subjects: 600 Tecnologia - Scienze applicate > 630 Agricoltura e tecnologie connesse > 636 Allevamento di animali > 636.5 Pollame, Polli (Classificare qui le opere d'insieme sull'Avicoltura) > 636.5089 Pollame - Medicina veterinaria > 636.50896203 Influenza aviaria (virus HPAI - Highly Pathogenic Avian Influenza virus)
900 Storia, Geografia e discipline ausiliarie > 910 Geografia e viaggi > 910.285 Geographic information systems
Depositing User: biblioteca 7
Date Deposited: 30 Jun 2010 08:13
Last Modified: 30 Jun 2010 08:13
URI: http://eprints.bice.rm.cnr.it/id/eprint/2806

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