No abstract available
MeSH terms
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Anti-Infective Agents / pharmacology
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Ciprofloxacin / pharmacology*
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Humans
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Levofloxacin
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Microbial Sensitivity Tests / methods
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North America
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Ofloxacin / pharmacology
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Pneumococcal Infections / microbiology
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Population Surveillance
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Streptococcus pneumoniae / drug effects*
Substances
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Anti-Infective Agents
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Ciprofloxacin
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Levofloxacin
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Ofloxacin