No abstract available
MeSH terms
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Aging / immunology
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Child, Preschool
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England / epidemiology
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Humans
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Incidence
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Infant
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Infant, Newborn
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Pertussis Vaccine*
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Wales / epidemiology
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Whooping Cough / epidemiology*
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Whooping Cough / prevention & control
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Whooping Cough / transmission