Study of Baseline Titres for Widal test among Population in Kakinada Region of AP.
Journal Title: Journal of Medical Science And clinical Research - Year 2018, Vol 6, Issue 2
Abstract
Background: Culture is the gold standard for diagnosis of enteric fever. Due to the poor isolations of Salmonella in recent times, Widal test is still a useful alternative aid. Good interpretation of the test cannot be made unless we know the correct baseline titres in population of particular area. Aim and Objectives: To determine the base line titres of antibodies in healthy individuals. Material and Methods: Blood samples were collected from 100 healthy individuals from August to November 2017. Widal tube agglutination test was performed to know the titres. Results: In the total samples screened, most frequently recorded titre for O & H agglutinins were 1:40 for Salmonella Typhi. Similarly for Salmonella Paratyphi A and B, anti H titres were 1:20 each respectively. Conclusion: It is concluded that the cut-off value of antibodies titres for Salmonella Typhi O and H antigens is >1:40, and for Paratyphi A & B H antigen is >1:20 in this region. Any titre more than this should be taken as high and interpreted in correlation with clinical findings or titers observed in paired sera.
Authors and Affiliations
Dr CH. Aruna Kumari
Keywords
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