Abstract
The causative agent of Newcastle disease (ND) of poultry is the avian paramyxovirus-1, also commonly known as ND virus (NDV). Like in many developing countries, ND is endemic in Niger and has significant economic impact on commercial and backyard poultry production. NDVs were characterized in Niger between 2006 and 2008 and shown to belong to genotypes XIV.1 and XVII. In order to determine the current situation regarding the virus in Niger, tracheas (n = 384) were collected for the detection of NDV from both healthy (n = 335) and sick (n = 49) backyard poultry in 2019. Of these samples, 24 from sick chickens were positive for NDV by conventional RT-PCR. Sequencing of the fusion protein gene and phylogenetic analysis revealed that the viruses belonged to either genotype XIV.2 or XVIII.2. No NDVs of genotype XIV.1 or XVII were identified in the current study highlighting the dynamic nature of NDV circulation in Niger and the region.
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Acknowledgements
The sequences from this study were generated through the Sequencing Services of the Animal Production and Health sub-programme of the Joint Food and Agricultural Organization (FAO) of the United Nations/International Atomic Energy Agency (IAEA) Division. This study was supported by funds from the IAEA Peaceful Uses Initiative (PUI) VETLAB Network. The authors thank the Regional Centre of Specialization on Livestock through the West African Agriculture Productivity Program (WAAPP), for funding of sample collection from the field.
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MMS, IIA, AA, BSK, HA, GC, and WGD conceived and designed the study; RI, HA, and HH collected the samples, MMS, BY, and HA analyzed the samples, MMS and WGD analyzed the sequence data and wrote the manuscript. HA and NA were involved in funding mobilization to conduct this study. All authors read and approved the final manuscript.
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Fig. S1 Map of Niger and neighbouring countries showing the location of sampling for this study in red. Adapted with permission from www.d-maps.com. Supplementary file2 (DOCX 124 kb)
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Souley, M.M., Issa Ibrahim, A., Souley Kouato, B. et al. Co-circulation of genotypes XIV.2 and XVIII.2 of avian paramyxovirus-1 (Newcastle disease virus) in backyard poultry in Niger. Virus Genes 57, 100–105 (2021). https://doi.org/10.1007/s11262-020-01804-x
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DOI: https://doi.org/10.1007/s11262-020-01804-x