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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
agricultural and biological sciences
Genetic diversity of newcastle disease virus in wild birds and pigeons in West Africa
Applied and Environmental Microbiology, Volume 79, No. 24, Year 2013
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Description
In West and Central Africa, virulent Newcastle disease virus (NDV) strains of the recently identified genotypes XIV, XVII, and XVIII are enzootic in poultry, representing a considerable threat to the sector. The increasing number of reports of virulent strains in wild birds at least in other parts of the world raised the question of a potential role of wild birds in the spread of virulent NDV in sub-Saharan Africa as well. We investigated 1,723 asymptomatic birds sampled at live-bird markets and sites important for wild-bird conservation in Nigeria and 19 sick or dead wild birds in Côte d'Ivoire for NDV class I and II. Typical avirulent wild-type genotype I strains were found in wild waterfowl in wetlands in northeastern Nigeria. They were unrelated to vaccine strains, and the involvement of inter- or intracontinental migratory birds in their circulation in the region is suggested. Phylogenetic analyses also revealed that genotype VI strains found in pigeons, including some putative new subgenotype VIh and VIi strains, were introduced on multiple separate occasions in Nigeria. A single virulent genotype XVIII strain was found in a dead wild bird in Côte d'Ivoire, probably as a result of spillover from sick poultry. In conclusion, screening of wild birds and pigeons for NDV revealed the presence a variety of virulent and avirulent strains in West Africa but did not provide strong evidence that wild birds play an important role in the spread of virulent strains in the region. © 2013, American Society for Microbiology.
Authors & Co-Authors
Snoeck, Chantal J.
Luxembourg, Strassen
Luxembourg Institute of Health
Adeyanju, Adeniyi T.
Nigeria, Jos
University of Jos
Nigeria, Ibadan
University of Ibadan
Owoade, Ademola Amubieya
Nigeria, Ibadan
University of Ibadan
Couacy-Hymann, Emmanuel
Costa Rica
Central Laboratory for Animal Diseases
Alkali, B. R.
Nigeria, Sokoto
Usmanu Danfodiyo University
Ottosson, Ulf
Nigeria, Jos
University of Jos
Sweden, Ottenby
Ottenby Bird Observatory
Muller, Claude P.
Luxembourg, Strassen
Luxembourg Institute of Health
Statistics
Citations: 48
Authors: 7
Affiliations: 6
Identifiers
Doi:
10.1128/AEM.02716-13
e-ISSN:
10985336
Research Areas
Genetics And Genomics
Study Locations
Multi-countries
Ivory Coast
Nigeria