Abstract
During July-December 2011, a variant virus, influenza A(H3N2)v, caused 12 human cases of influenza. The virus contained genes originating from swine, avian, and human viruses, including the M gene from influenza A(H1N1)pdm09 virus. Influenza A(H3N2)v viruses were antigenically distinct from seasonal influenza viruses and similar to proposed vaccine virus A/Minnesota/11/2010.
MeSH terms
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Animals
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Disease Outbreaks
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Humans
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Influenza A Virus, H1N1 Subtype / classification
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Influenza A Virus, H1N1 Subtype / genetics*
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Influenza A Virus, H3N2 Subtype / classification
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Influenza A Virus, H3N2 Subtype / genetics*
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Influenza, Human / epidemiology
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Influenza, Human / virology*
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Phylogeny
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Reassortant Viruses / classification
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Reassortant Viruses / genetics*
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United States / epidemiology
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Viral Matrix Proteins / genetics