No abstract available
MeSH terms
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Adolescent
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Adult
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Child
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Cross Protection
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Humans
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Incidence
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Influenza A Virus, H1N1 Subtype / immunology*
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Influenza Vaccines / administration & dosage
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Influenza Vaccines / adverse effects*
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Influenza Vaccines / immunology*
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Influenza, Human / epidemiology*
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Influenza, Human / prevention & control*
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Influenza, Human / virology
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Pandemics*
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Risk Factors
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Vaccination / statistics & numerical data*