No abstract available
MeSH terms
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Child, Preschool
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Demography
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France / epidemiology
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Humans
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Incidence
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Meningitis, Meningococcal / epidemiology*
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Meningococcal Infections / epidemiology*
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Neisseria meningitidis, Serogroup B* / isolation & purification
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Neisseria meningitidis, Serogroup B* / pathogenicity