No abstract available
MeSH terms
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Child, Preschool
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Cuba
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Escherichia coli Infections / epidemiology
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Escherichia coli Infections / microbiology*
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Escherichia coli O157 / classification
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Escherichia coli O157 / genetics
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Escherichia coli O157 / isolation & purification*
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Escherichia coli O157 / pathogenicity
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Humans
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Infant
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Phenotype
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Polymerase Chain Reaction
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Retrospective Studies