No abstract available
MeSH terms
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Child, Preschool
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Disease Outbreaks
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Female
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Humans
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Infant
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Influenza A Virus, H1N1 Subtype / isolation & purification*
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Influenza A Virus, H1N1 Subtype / pathogenicity
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Influenza, Human / epidemiology*
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Influenza, Human / virology
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Male
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Risk Factors
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Saudi Arabia / epidemiology