Evaluation of the Changes in Tuberculin Skin Test (TST) among the Interns in Isfahan University of Medical Sciences (IUMS), Iran, after One Year of Starting Internship during the Years 2016-2017

Document Type : Original Article (s)

Authors

1 Assistant Professor, Department of Infectious Diseases, School of Medicine AND Nosocomial Infection Research Center, Isfahan University of Medical Sciences, Isfahan, Iran

2 Student of Medicine, Student Research Committee, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran

3 Assistant Professor, Department of Community Medicine and Family Physician, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran

4 Associate Professor, Department of Community Medicine and Family Physician, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran

Abstract

Background: Medical students, especially whom enter to clinical courses, are in high exposure of Mycobacterium tuberculosis responsible for tuberculosis (TB). This emphasizes the need to evaluate the condition of exposure to tuberculosis in this population.Methods: In this cross-sectional descriptive study, changes in tuberculin skin test (TST) was evaluated among 140 interns in Isfahan University of Medical Sciences (IUMS), Iran, during the years 2016-2017. Purified protein derivative (PPD) was injected into the medial side of forearm. After 72 hours, the diameter of induration was measured. 10 mm of induration and higher was considered as positive. 1 year later, the tuberculin skin test was repeated. The results from the first and second tuberculin skin tests were compared and analyzed. Demographic information was recorded.Findings: 46.4% of examined population were men. In first tuberculin skin test, 8 cases (5.7%), and in second test, 10 cases (7.1%) were positive. 2 cases of test conversion were found. Mean induration size among all interns was 2.82 and 3.17 mm in first and second tuberculin skin tests, respectively. In both tests, men had significantly more positive results.Conclusion: In this study, 2 test conversion cases were found. As these interns will have more exposure in their educational and professional future, it needs to perform useful plans to control and prevent transmission of tuberculosis.

Keywords

References

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Journal of Isfahan Medical School
Volume 36, Issue 481 - Serial Number 481
May and June 2018
Pages 569-574

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History

  • Receive Date: 28 February 2018
  • Revise Date: 01 November 2024
  • Accept Date: 06 April 2022

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