Use of onsite typhoid IgG/IgM combo test as rapid diagnostic test for typhoid fever

Autor: Alaa Aboud Mohamed, Basel Abd El Monem Ebeid, Radwa Ahmed Rabea Abdellatif, Mariam Malak
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: Beni-Suef University Journal of Basic and Applied Sciences, Vol 12, Iss 1, Pp 1-5 (2023)
Druh dokumentu: article
ISSN: 2314-8543
DOI: 10.1186/s43088-023-00391-8
Popis: Abstract Background The incidence of typhoid fever is increasing in Egypt. The Widal test is the evaluation most widely used in Egypt for diagnosis, but it has many drawbacks; therefore, new diagnostic tools are needed. Our aim was to evaluate the diagnostic accuracy of the onsite typhoid IgG/IgM combo rapid test in diagnosing typhoid fever. Method Blood specimens were collected from 90 patients (of all ages) who presented with fever of more than 4 days’ duration. The OnSite Combo test and the Widal test were performed for all patients. Results The OnSite Combo test results were positive in approximately 24% of all patients; the Widal test results were positive in 18.9%; and typhoid was diagnosed through blood culture in 32.2%. The OnSite Combo test had 72.4% sensitivity, 98.4% specificity, a positive predictive value of 95.5%, and a negative predictive value of 88.2%. In contrast, the Widal test had 51.7% sensitivity, 69.7% specificity, a positive predictive value of 88.2%, and a negative predictive value of 80.8%. Conclusions The onsite combo test was more efficacious than the Widal test in diagnosing typhoid fever.
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