No abstract available
MeSH terms
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Adolescent
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Antibodies / analysis
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Child
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Colorado
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Female
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Health Education
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Hemagglutination Tests
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Humans
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Male
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Pharynx / microbiology
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Respiratory Tract Infections / epidemiology
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Respiratory Tract Infections / etiology
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Respiratory Tract Infections / immunology
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Respiratory Tract Infections / microbiology
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Respiratory Tract Infections / prevention & control
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School Health Services
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Streptococcal Infections / epidemiology
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Streptococcal Infections / immunology
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Streptococcal Infections / prevention & control*
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Streptococcus / isolation & purification