Risk Factors for Tuberculosis

The risk of progression from exposure to the tuberculosis bacilli to the development of active disease is a two-stage process governed by both exogenous and endogenous risk factors. Exogenous factors play a key role in accentuating the progression from exposure to infection among which the bacillary...

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Main Authors: Padmanesan Narasimhan, James Wood, Chandini Raina MacIntyre, Dilip Mathai
Format: Article
Language:English
Published: Wiley 2013-01-01
Series:Pulmonary Medicine
Online Access:http://dx.doi.org/10.1155/2013/828939
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author Padmanesan Narasimhan
James Wood
Chandini Raina MacIntyre
Dilip Mathai
author_facet Padmanesan Narasimhan
James Wood
Chandini Raina MacIntyre
Dilip Mathai
author_sort Padmanesan Narasimhan
collection DOAJ
description The risk of progression from exposure to the tuberculosis bacilli to the development of active disease is a two-stage process governed by both exogenous and endogenous risk factors. Exogenous factors play a key role in accentuating the progression from exposure to infection among which the bacillary load in the sputum and the proximity of an individual to an infectious TB case are key factors. Similarly endogenous factors lead in progression from infection to active TB disease. Along with well-established risk factors (such as human immunodeficiency virus (HIV), malnutrition, and young age), emerging variables such as diabetes, indoor air pollution, alcohol, use of immunosuppressive drugs, and tobacco smoke play a significant role at both the individual and population level. Socioeconomic and behavioral factors are also shown to increase the susceptibility to infection. Specific groups such as health care workers and indigenous population are also at an increased risk of TB infection and disease. This paper summarizes these factors along with health system issues such as the effects of delay in diagnosis of TB in the transmission of the bacilli.
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spelling doaj-art-620c6cf9c0534032a9a52472f7d93c9c2025-02-03T06:05:11ZengWileyPulmonary Medicine2090-18362090-18442013-01-01201310.1155/2013/828939828939Risk Factors for TuberculosisPadmanesan Narasimhan0James Wood1Chandini Raina MacIntyre2Dilip Mathai3School of Public Health and Community Medicine, The University of New South Wales, Kensington, Sydney, NSW 2052, AustraliaSchool of Public Health and Community Medicine, The University of New South Wales, Kensington, Sydney, NSW 2052, AustraliaSchool of Public Health and Community Medicine, The University of New South Wales, Kensington, Sydney, NSW 2052, AustraliaInfectious Diseases Research and Training Centre, Department of Medicine-I and Infectious Diseases, Christian Medical College, Vellore, Tamil Nadu, IndiaThe risk of progression from exposure to the tuberculosis bacilli to the development of active disease is a two-stage process governed by both exogenous and endogenous risk factors. Exogenous factors play a key role in accentuating the progression from exposure to infection among which the bacillary load in the sputum and the proximity of an individual to an infectious TB case are key factors. Similarly endogenous factors lead in progression from infection to active TB disease. Along with well-established risk factors (such as human immunodeficiency virus (HIV), malnutrition, and young age), emerging variables such as diabetes, indoor air pollution, alcohol, use of immunosuppressive drugs, and tobacco smoke play a significant role at both the individual and population level. Socioeconomic and behavioral factors are also shown to increase the susceptibility to infection. Specific groups such as health care workers and indigenous population are also at an increased risk of TB infection and disease. This paper summarizes these factors along with health system issues such as the effects of delay in diagnosis of TB in the transmission of the bacilli.http://dx.doi.org/10.1155/2013/828939
spellingShingle Padmanesan Narasimhan
James Wood
Chandini Raina MacIntyre
Dilip Mathai
Risk Factors for Tuberculosis
Pulmonary Medicine
title Risk Factors for Tuberculosis
title_full Risk Factors for Tuberculosis
title_fullStr Risk Factors for Tuberculosis
title_full_unstemmed Risk Factors for Tuberculosis
title_short Risk Factors for Tuberculosis
title_sort risk factors for tuberculosis
url http://dx.doi.org/10.1155/2013/828939
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