No abstract available
Publication types
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Research Support, N.I.H., Extramural
MeSH terms
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Adolescent
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Adult
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Age Distribution
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Aged
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Aged, 80 and over
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Antibodies, Viral / blood
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Child
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Child, Preschool
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China / epidemiology
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Cohort Studies
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Female
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Humans
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Influenza, Human / epidemiology*
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Influenza, Human / immunology*
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Male
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Middle Aged
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Rural Population / statistics & numerical data*
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Sex Distribution
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Urban Population / statistics & numerical data*
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Vaccination / statistics & numerical data
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Young Adult