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

Cappelle Julien, Caron Alexandre, Servan de Almeida Renata, Gil Patricia, Pedrono Miguel, Mundava Josephine, Fofana Bouba, Balança Gilles, Dakouo Martin, Ould El Mamy Ahmed Bezeid, Abolnik Célia, Maminiaina Olivier Fridolin, Cumming Graeme S., De Visscher Marie-Noël, Albina Emmanuel, Chevalier Véronique, Gaidet Nicolas. 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) : 1292-1303.

https://doi.org/10.1017/S095026881400185X

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Quartile : Q2, Sujet : PUBLIC, ENVIRONMENTAL & OCCUPATIONAL HEALTH (Science) / Quartile : Q2, Sujet : INFECTIOUS DISEASES

Liste HCERES des revues (en SHS) : oui

Thème(s) HCERES des revues (en SHS) : Psychologie-éthologie-ergonomie

Résumé : 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.

Mots-clés Agrovoc : virus maladie de newcastle, épidémiologie, transmission des maladies, surveillance épidémiologique, contrôle de maladies, écologie, infection, génotype, oiseau, animal sauvage, volaille, Enquête pathologique, Paramyxovirus aviaire