USE OF WIDAL TEST IN DIAGNOSIS OF TYPHOID FEVER IN NORTH INDIAN POPULATION BY ESTIMATING BASELINE TITER IN CONTROL GROUP


Shetty Jeevan

Abstract


Objective: This study was undertaken to establish a cutoff significant titer for Widal test using healthy volunteers as control group. Utilizing the baseline titer obtained from the control group, a diagnosis of typhoid fever was made in the test group comprising outpatients and inpatients.

Methods: Blood samples were collected from healthy volunteers and patients attending G.S Medical College and Hospital, Pilkhuwa, over a period of 6 months from September 2016 to March 2017. Antibodies to Salmonella typhi (TO, TH) and Paratyphi A (AH) and Paratyphi B (BH) are determined by this tube agglutination test. A total of 124 healthy controls and 303 patients having clinical suspicion of typhoid fever were subjected to Widal test.

Results: In healthy control group, titer TO ≥20 was observed in 43 (34.7%), TO ≥40 in 48 (38.7%), TO≥80 in 25 (20.2%), and titer TO ≥160, TO ≥320 was observed in none of the control group. Titer TH ≥40 in 58 (46.8%), AH ≥40 in 7 (5.6%), and BH ≥40 in 13 (10.5%) were observed in the control group. Among the test group, 96 (31.7%) sera were positive out of 303 clinically suspected enteric fever by the Widal test. Among different age group studied, 34 (46.6%) patients belonged to the age group of 11-20 years which formed the highest followed by the age group of 21-30 years (33.3%).

Conclusion: Based on the study, a cutoff titer of ≥160 for anti-O and anti-H antibodies and titer of ≥80 for anti-AH and anti-BH antibodies be considered as significant titer in diagnosis of enteric fever in this region. The baseline titer helps in early recognition and treatment of this serious health problem.


Keywords


Titer, Widal, Antibodies, Typhoid fever, Agglutination.

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About this article

Title

USE OF WIDAL TEST IN DIAGNOSIS OF TYPHOID FEVER IN NORTH INDIAN POPULATION BY ESTIMATING BASELINE TITER IN CONTROL GROUP

Keywords

Titer, Widal, Antibodies, Typhoid fever, Agglutination.

DOI

10.22159/ajpcr.2017.v10i7.18789

Date

01-07-2017

Additional Links

Manuscript Submission

Journal

Asian Journal of Pharmaceutical and Clinical Research
Vol 10 Issue 7 July 2017 Page: 251-253

Print ISSN

0974-2441

Online ISSN

2455-3891

Statistics

35 Views | 37 Downloads

Authors & Affiliations

Shetty Jeevan
Department of Microbiology, G.S Medical College and Hospital (Chaudhary Charan Singh University), Pilkhuwa, Uttar Pradesh, India.
India


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