Article
Multiple lineages of antigenically and genetically diverse influenza A virus co-circulate in the United States swine population.
Virus research - 1 Jul 2004
Webby R J, Rossow K, Erickson G, Sims Y, Webster R
Abstract excerpt
Before the isolation of H3N2 viruses in 1998, swine influenza in the United States was an endemic disease caused exclusively by classical-swine H1N1 viruses. In this study we determined the antigenic and phylogenetic composition of a selection of currently circulating strains and revealed that, in contrast to the situation pre-1998, the swine population in the United States is now a dynamic viral reservoir...
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