Phylogenetic analysis reveals that this deadly virus first arrived in Africa from different sources.
Abstract
As the avian influenza virus H5N1 swept from Asia across Russia to Europe, Nigeria was the first country in Africa to report the emergence of this highly pathogenic virus. Here we analyse H5N1 sequences in poultry from two different farms in Lagos state and find that three H5N1 lineages were independently introduced through routes that coincide with the flight paths of migratory birds, although independent trade imports cannot be excluded.
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Ducatez, M., Olinger, C., Owoade, A. et al. Multiple introductions of H5N1 in Nigeria. Nature 442, 37 (2006). https://doi.org/10.1038/442037a
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DOI: https://doi.org/10.1038/442037a
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