No abstract available
MeSH terms
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Aged
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Aged, 80 and over
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Belgium / epidemiology
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Carrier State / epidemiology*
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Communicable Disease Control
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Female
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Humans
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Infection Control
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Male
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Pneumococcal Infections / prevention & control*
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Prevalence
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Prospective Studies
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Risk Factors
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Streptococcus pneumoniae* / isolation & purification