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The Widal test, developed in 1896 and named after its inventor, Georges-Fernand Widal, is an indirect agglutination test for enteric fever or undulant fever whereby bacteria causing typhoid fever are mixed with a serum containing specific antibodies obtained from an infected individual. In cases of Salmonella infection, the test assesses for host antibodi…
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| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| Widal test | Based on | Seropositivity: immune agglutination reaction to specific infectious agent | 1.00 | infobox |
| Widal test | Purpose | serological test for enteric fever | 1.00 | infobox |
| Widal test | Test of | Typhoid fever (enteric fever) | 1.00 | infobox |
| bismuth sulfite agar | instance of | These organisms produce H2S from thiosulfate and can be identified easily on differential media | 0.80 | text |
| Indian subcontinent | instance of | A single Widal test is of little clinical relevance especially in endemic areas | 0.80 | text |
| Africa | instance of | A single Widal test is of little clinical relevance especially in endemic areas | 0.80 | text |
| South-east Asia | instance of | A single Widal test is of little clinical relevance especially in endemic areas | 0.80 | text |
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