Iranian Journal of Medical Sciences
Iranian Journal of Medical Sciences

The Prevalence of Latent Tuberculosis Infection and Smear Positive Pulmonary Tuberculosis in People with Household Close Contact with Tuberculosis in North of Iran

Document Type : Brief Report(s)

Authors

Mahmood Moosazadeh 1
Narges Khanjani 2
Mohammadreza Parsaee 3

1 Health Sciences Research Center, Faculty of Health, Mazandaran University of Medical Sciences, Sari, Iran

2 Research Center for Environmental Health Engineering, Kerman Medical University, Kerman, Iran

3 Health Deputy, Kerman University of Medical Sciences, Kerman, Iran

Abstract
One of the recommended strategies for preventing tuberculosis is to screen high-risk populations with respect to Mycobacterium tuberculosis (TB) infection. The aim of the present study was to investigate latent infection and active tuberculosis in people with close household contact. It was a cross-sectional descriptive, analytical study with the sample size of 668 people from homes with one infected resident. In order to diagnose tuberculosis latent infection, the PPD test was done. To determine patients with smear-positive pulmonary tuberculosis, three sputum samples were taken from every patient and were examined using direct microscopy and culture. Data was analyzed by SPSS20 software. The prevalence of latent tuberculosis infection and smear-positive pulmonary tuberculosis were 42.8% and 0.9% respectively. The prevalence of latent tuberculosis infection and smear-positive pulmonary tuberculosis in people with close household contact were less than that of other studies. However, smear-positive pulmonary tuberculosis in people with close household contact was 199.5 times more than that of the general population.

Keywords

Tuberculosis
Household close contact
Iran
Prevalence
Iranian Journal of Medical Sciences
Volume 40, Issue 2 - Serial Number 2
24
March 2015
Pages 161-165

  • Received 07 August 2013
  • Revised 22 August 2020
  • Accepted 24 December 2018

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