No abstract available
MeSH terms
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Adolescent
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Adult
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Child
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Contact Tracing
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Cross-Sectional Studies
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Female
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Humans
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Incidence
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Male
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Meningitis, Meningococcal / epidemiology*
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Meningitis, Meningococcal / prevention & control
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Meningitis, Meningococcal / transmission
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Microbial Sensitivity Tests
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Pennsylvania