Comparative study of dot enzyme immunoassay (Typhidot-M) and Widal test in the diagnosis of typhoid fever

Indian Pediatr. 2010 Apr;47(4):331-3. doi: 10.1007/s13312-010-0062-x. Epub 2009 Apr 15.

Abstract

We compared the sensitivity and specificity of Typhidot-M and Widal test with blood culture (gold standard) for diagnosing typhoid fever in 105 children aged 1-15 years admitted with clinical suspicion of typhoid fever. Of the 105 cases, blood culture was positive for S.typhi in 41 (39%) children, Widal test was positive in 48 (45.7%) and Typhidot-M was positive in 78 (74.3%) cases. Sensitivity and specificity of Typhidot-M was 92.6% and 37.5% while sensitivity and specificity of Widal test was 34.1% and 42.8%, respectively. In children with fever of less than 7 days duration, Typhidot-M was positive in 97%, compared to 24.2% by Widal test. Typhidot-M is a simple and sensitive test for early diagnosis of typhoid fever in children.

Publication types

  • Comparative Study

MeSH terms

  • Adolescent
  • Antibodies, Bacterial / blood
  • Child
  • Child, Preschool
  • Humans
  • Immunoenzyme Techniques / methods*
  • Infant
  • Salmonella typhi / immunology
  • Serologic Tests / methods*
  • Typhoid Fever / blood
  • Typhoid Fever / diagnosis*

Substances

  • Antibodies, Bacterial