No abstract available
MeSH terms
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Child, Preschool
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Disease Outbreaks*
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Electrophoresis, Gel, Pulsed-Field / methods
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Enterohemorrhagic Escherichia coli / isolation & purification*
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Escherichia coli Infections / epidemiology*
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Escherichia coli Infections / microbiology
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Female
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Humans
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Infant
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Japan / epidemiology
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Male
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Schools*
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Schools, Nursery*