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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
agricultural and biological sciences
Understanding the ecological drivers of avian influenza virus infection in wildfowl: A continental-scale study across Africa
Proceedings of the Royal Society B: Biological Sciences, Volume 279, No. 1731, Year 2012
Notification
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Description
Despite considerable effort for surveillance of wild birds for avian influenza viruses (AIVs), empirical investigations of ecological drivers of AIV prevalence in wild birds are still scarce. Here we used a continental-scale dataset, collected in tropical wetlands of 15 African countries, to test the relative roles of a range of ecological factors on patterns of AIV prevalence in wildfowl. Seasonal and geographical variations in prevalence were positively related to the local density of the wildfowl community and to the wintering period of Eurasian migratory birds in Africa. The predominant influence of wildfowl density with no influence of climatic conditions suggests, in contrast to temperate regions, a predominant role for inter-individual transmission rather than transmission via long-lived virus persisting in the environment. Higher prevalences were found in Anas species than in non-Anas species even when we account for differences in their foraging behaviour (primarily dabbling or not) or their geographical origin (Eurasian or Afro-tropical), suggesting the existence of intrinsic differences between wildfowl taxonomic groups in receptivity to infection. Birds were found infected as often in oropharyngeal as in cloacal samples, but rarely for both types of sample concurrently, indicating that both respiratory and digestive tracts may be important for AIV replication. © 2011 The Royal Society.
Authors & Co-Authors
Gaidet-Drapier, Nicolas
France, Paris
Cirad
Caron, Alexandre
France, Paris
Cirad
Cappelle, Julien
France, Paris
Cirad
Cumming, Graeme S.
South Africa, Cape Town
University of Cape Town
Balança, Gilles
France, Paris
Cirad
Hammoumi, Saliha
France, Montferrier-sur-lez
Animal, Santé, Territoires, Risques et Ecosystèmes Astre
Cattoli, Giovanni
Italy, Legnaro
Istituto Zooprofilattico Sper.le Delle Venezie
Abolnik, Celia
South Africa, Onderstepoort
Onderstepoort Veterinary Institute
de Servan Almeida, R.
France, Montferrier-sur-lez
Animal, Santé, Territoires, Risques et Ecosystèmes Astre
Gil, Patricia
France, Paris
Cirad
Fereidouni, Sasan R.
Germany, Tubingen
Friedrich-loeffler-institute
Grosbois, Vladimir
France, Paris
Cirad
Tran, Annelise
France, Paris
Cirad
Mundava, Josphine
Zimbabwe, Bulawayo
National University of Science and Technology Bulawayo
Fofana, Bouba
Mali
Direction Nationale Des Eaux et Forêts du Mali
Ould El Mamy, Ahmed B.
Mauritania
Centre National D'elevage et de Recherches Vétérinaires
Ndlovu, Mduduzi
South Africa, Cape Town
University of Cape Town
Mondain-Monval, Jean Yves
France, Paris
Office National de la Chasse et de la Faune Sauvage
Triplet, Patrick
France, Strasbourg
Smbs
France, Paris
Oiseaux Migrateurs du Paléarctique Occidental
Hagemeijer, Ward J.M.
Netherlands, Wageningen
Wetlands International, Netherlands
Karesh, William B.
United States, New York
Ecohealth Alliance
Newman, Scott H.
Italy, Rome
Food and Agriculture Organization of the United Nations
Dodman, Tim
Netherlands, Wageningen
Wetlands International, Netherlands
Statistics
Citations: 104
Authors: 23
Affiliations: 15
Identifiers
Doi:
10.1098/rspb.2011.1417
ISSN:
09628452
Research Areas
Environmental
Study Design
Cross Sectional Study