No abstract available
MeSH terms
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Canada / epidemiology
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Disease Outbreaks
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Humans
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Influenza A Virus, H1N1 Subtype / pathogenicity*
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Influenza Vaccines / adverse effects*
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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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Observation
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Risk Assessment
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Sentinel Surveillance