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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
4
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pubmed:dateCreated |
1978-10-25
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pubmed:abstractText |
The usefulness of a single Widal test to diagnose typhoid fever in endemic areas was investigated. Reciprocal Salmonella typhi O and H titers greater than or equal to 40 and greater than or equal to 80, respectively, occurred in approximately 90% of 42 Mexican patients with bacteriologically-confirmed typhoid fever at the time of presentation to hospital and, by day 4 to 5 of clinical illness, in 70% of U.S. adult volunteers who developed typhoid fever in the course of vaccine efficacy trials but in only 0.7% (O) to 3% (H) of 275 healthy individuals from a non-endemic area. Healthy Peruvians from areas endemic for typhoid fever commonly had antibody which was age-related. Peak prevalence was found in 15- to 19-yr-olds in whom 29% had O titers greater than or equal to 40 and 76% had H titers greater than or equal to 80. A single Widal test in an unvaccinated individual showing elevated O and H titers is strongly suggestive of typhoid fever if the person comes from a non-endemic area or is a child less than 10 yr of age in an endemic area. Because of the high prevalence of antibody amongst healthy invididuals over 10 yr of age in endemic, areas, a single Widal test offers virtually no diagnostic assistance in adolescents and adults.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
AIM
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pubmed:chemical | |
pubmed:status |
MEDLINE
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pubmed:month |
Jul
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pubmed:issn |
0002-9637
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
27
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
795-800
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pubmed:dateRevised |
2004-11-17
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pubmed:meshHeading |
pubmed-meshheading:686246-Adolescent,
pubmed-meshheading:686246-Adult,
pubmed-meshheading:686246-Aged,
pubmed-meshheading:686246-Agglutination Tests,
pubmed-meshheading:686246-Antibodies, Bacterial,
pubmed-meshheading:686246-Antigens, Bacterial,
pubmed-meshheading:686246-Child,
pubmed-meshheading:686246-Child, Preschool,
pubmed-meshheading:686246-Humans,
pubmed-meshheading:686246-Maryland,
pubmed-meshheading:686246-Mexico,
pubmed-meshheading:686246-Middle Aged,
pubmed-meshheading:686246-Peru,
pubmed-meshheading:686246-Salmonella typhi,
pubmed-meshheading:686246-Typhoid Fever
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pubmed:year |
1978
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pubmed:articleTitle |
Diagnostic value of the Widal test in areas endemic for typhoid fever.
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pubmed:publicationType |
Journal Article
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