No abstract available
MeSH terms
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Animals
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Child, Preschool
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China
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DNA, Viral / genetics
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Genome, Viral / genetics
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Hemagglutination Inhibition Tests
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Hemagglutinins, Viral / genetics
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Humans
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Influenza A Virus, H9N2 Subtype / classification
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Influenza A Virus, H9N2 Subtype / genetics
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Influenza A Virus, H9N2 Subtype / isolation & purification
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Influenza A Virus, H9N2 Subtype / physiology*
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Influenza, Human / virology*
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Male
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Mutation
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Phylogeny*
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RNA-Dependent RNA Polymerase / genetics
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Sequence Analysis, DNA
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Viral Proteins / genetics
Substances
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DNA, Viral
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Hemagglutinins, Viral
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PB2 protein, Influenzavirus A
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Viral Proteins
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RNA-Dependent RNA Polymerase