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Evolution of influenza A virus nucleoprotein genes: implications for the origins of H1N1 human and classical swine viruses

1 Jul 1991

Abstract excerpt

A phylogenetic analysis of 52 published and 37 new nucleoprotein (NP) gene sequences addressed the evolution and origin of human and swine influenza A viruses. H1N1 human and classical swine viruses (i.e., those related to Swine/Iowa/15/30) share a single common ancestor, which was estimated to have occurred in 1912 to 1913. From this common ancestor, human and classical swine virus NP genes have evolved at...

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PMID: 2041090
DOI: 10.1128/jvi.65.7.3704-3714.1991

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