Empirical analysis suggests continuous and homogeneous circulation of Newcastle disease virus in a wide range of wild bird species in Africa

Cappelle, J., Caron, A., de Almeida, R. Servan, Gil, P., Pedrono, M., Mundava, J., Fofana, B., Balanca, G., Dakouo, M., El Mamy, A.B. Ould, Abolnik, C., Maminiaina, O.F., Cumming, G.S., De Visscher, M-N., Albina, E., Chevalier, V., and Gaidet, N. (2015) Empirical analysis suggests continuous and homogeneous circulation of Newcastle disease virus in a wide range of wild bird species in Africa. Epidemiology and Infection, 143 (6). pp. 1292-1303.

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Abstract

Newcastle disease (ND) is one of the most important poultry diseases worldwide and can lead to annual losses of up to 80% of backyard chickens in Africa. All bird species are considered susceptible to ND virus (NDV) infection but little is known about the role that wild birds play in the epidemiology of the virus. We present a long-term monitoring of 9000 wild birds in four African countries. Overall, 3·06% of the birds were PCR-positive for NDV infection, with prevalence ranging from 0% to 10% depending on the season, the site and the species considered. Our study shows that ND is circulating continuously and homogeneously in a large range of wild bird species. Several genotypes of NDV circulate concurrently in different species and are phylogenetically closely related to strains circulating in local domestic poultry, suggesting that wild birds may play several roles in the epidemiology of different NDV strains in Africa. We recommend that any strategic plan aiming at controlling ND in Africa should take into account the potential role of the local wild bird community in the transmission of the disease.

Item ID: 40883
Item Type: Article (Refereed Research - C1)
Keywords: APMV-1, ecology, epidemiology, infection, maintenance, Madagascar, Mali Mauritania, spread, transmission, Zimbabwe
Additional Information:

For supplementary material accompanying this paper visit http://dx.doi.org/10.1017/S095026881400185X.

ISSN: 1469-4409
Funders: French Ministry of Foreign Affairs, USAID, Wildlife Conservation Society
Projects and Grants: Global Avian Influenza network for Surveillance (GRIPAVI) project
Date Deposited: 19 Nov 2015 01:37
FoR Codes: 05 ENVIRONMENTAL SCIENCES > 0502 Environmental Science and Management > 050202 Conservation and Biodiversity @ 33%
07 AGRICULTURAL AND VETERINARY SCIENCES > 0707 Veterinary Sciences > 070704 Veterinary Epidemiology @ 34%
05 ENVIRONMENTAL SCIENCES > 0501 Ecological Applications > 050104 Landscape Ecology @ 33%
SEO Codes: 83 ANIMAL PRODUCTION AND ANIMAL PRIMARY PRODUCTS > 8303 Livestock Raising > 830309 Poultry @ 33%
97 EXPANDING KNOWLEDGE > 970106 Expanding Knowledge in the Biological Sciences @ 34%
96 ENVIRONMENT > 9605 Ecosystem Assessment and Management > 960501 Ecosystem Assessment and Management at Regional or Larger Scales @ 33%
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