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Article

The emergence of novel swine influenza viruses in North America.

Virus research - 10 May 2002

Olsen Christopher W

Abstract excerpt

Since 1997, novel viruses of three different subtypes and five different genotypes have emerged as agents of influenza among pigs in North America. The appearance of these viruses is remarkable because there were no substantial changes in the overall epidemiology of swine influenza in the United States and Canada for over 60 years prior to this time. Viruses of the classical H1N1 lineage were virtually the...

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PMID: 12034486
DOI: 10.1016/s0168-1702(02)00027-8

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PubMed metadata and Literature Corpus relationships. Corpus snapshot updated 6 Sept 2026. Manifest publication-graph-cohort-2026-09-06.1.

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