No abstract available
MeSH terms
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Adolescent
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Adult
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Age Factors
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Aged
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Child
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Child, Preschool
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Chloramphenicol / pharmacology*
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Disease Outbreaks / epidemiology*
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Drug Resistance, Microbial
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Female
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Humans
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Infant
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Male
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Mexico
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Middle Aged
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Rural Population
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Salmonella typhi / drug effects*
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Salmonella typhi / isolation & purification
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Seasons
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Sewage
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Sex Factors
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Socioeconomic Factors
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Thyroid Gland / etiology
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Typhoid Fever / epidemiology*
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Water Microbiology
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Water Supply*