No abstract available
Keywords:
influenza; vaccine effectiveness; vaccines and immunisation.
MeSH terms
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Humans
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Influenza A Virus, H1N1 Subtype / immunology*
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Influenza Vaccines / immunology*
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Influenza, Human / prevention & control*
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Vaccines, Attenuated / immunology*
Substances
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Influenza Vaccines
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Vaccines, Attenuated