No abstract available
MeSH terms
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Aged
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Aged, 80 and over
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Antibodies, Viral / blood
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Humans
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Immunization Programs*
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Influenza A virus / immunology
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Influenza B virus / immunology
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Influenza Vaccines* / administration & dosage
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Influenza, Human / epidemiology
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Influenza, Human / mortality*
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Influenza, Human / prevention & control*
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Middle Aged
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Mortality
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Randomized Controlled Trials as Topic / standards*
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Treatment Outcome
Substances
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Antibodies, Viral
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Influenza Vaccines