No abstract available
MeSH terms
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Animals
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Biological Evolution*
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Disease Outbreaks
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Humans
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Influenza A Virus, H1N1 Subtype* / genetics
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Influenza, Human / epidemiology
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Influenza, Human / transmission
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Influenza, Human / virology
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Mutation
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Pneumonia, Viral / virology
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Swine / virology