No abstract available
MeSH terms
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Antibodies, Bacterial / analysis
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Carrier State / epidemiology
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Child
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Egypt
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Humans
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Pharyngitis / epidemiology
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Pharynx / microbiology
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Prospective Studies
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Rural Population*
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Seasons
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Serotyping
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Streptococcal Infections / epidemiology*
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Streptococcus / isolation & purification
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Streptolysins
Substances
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Antibodies, Bacterial
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Streptolysins