No abstract available
MeSH terms
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Bacteriology / history*
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Carrier State / epidemiology
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Carrier State / prevention & control*
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Communicable Disease Control / history
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History, 20th Century
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Humans
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Public Health / history*
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Public Health / methods
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Typhoid Fever / epidemiology
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Typhoid Fever / history*
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Typhoid Fever / prevention & control
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United States / epidemiology