No abstract available
MeSH terms
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Antibodies, Bacterial / blood
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Antigens, Bacterial / analysis
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Humans
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Japan / epidemiology
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Male
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Middle Aged
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Rickettsia typhi* / immunology
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Rickettsia typhi* / isolation & purification
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Travel*
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Typhus, Endemic Flea-Borne / diagnosis*
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Typhus, Endemic Flea-Borne / microbiology
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Typhus, Endemic Flea-Borne / transmission*
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Vietnam
Substances
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Antibodies, Bacterial
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Antigens, Bacterial