No abstract available
Publication types
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Comment
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Editorial
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Historical Article
MeSH terms
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Age Factors
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Child
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Disease Outbreaks
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History, 19th Century
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History, 20th Century
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Hong Kong / epidemiology
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Hospitalization / statistics & numerical data
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Humans
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Infant
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Influenza Vaccines / administration & dosage
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Influenza, Human / epidemiology*
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Influenza, Human / history
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Influenza, Human / mortality
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Influenza, Human / prevention & control
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Pneumonia / mortality
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Seasons
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United States / epidemiology