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Related Concept Videos

Pulmonary Tuberculosis IV01:26

Pulmonary Tuberculosis IV

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Tuberculosis, more commonly referred to as TB, is an infectious disease stemming from Mycobacterium tuberculosis. While it primarily impacts the lungs, TB can also affect other body areas. Given its severity and global impact, timely and accurate diagnosis is crucial for controlling its spread and improving patient outcomes.
Several diagnostic approaches are used to detect TB. The conventional method is the Tuberculin Skin Test (TST), also known as the Mantoux test. However, this method has...
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Pulmonary Tuberculosis V01:28

Pulmonary Tuberculosis V

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Medical management of tuberculosis (TB) patients involves a comprehensive approach that includes diagnosis, treatment, and monitoring. The specific strategies can vary depending on the type of tuberculosis (latent or active), the patient's overall health status, and other considerations.
Latent tuberculosis infection occurs when TB bacteria are present in a person's body, but are not causing illness or symptoms. It is not contagious, and preventive treatment is crucial to avoid the...
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Pulmonary Tuberculosis I01:29

Pulmonary Tuberculosis I

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Tuberculosis, often called TB, is a contagious illness primarily caused by Mycobacterium tuberculosis. It mainly affects the lung parenchyma but can also impact other body parts.
Causative Organism
The primary infectious agent causing tuberculosis is Mycobacterium tuberculosis, a slow-growing, acid-fast, aerobic rod that exhibits sensitivity to heat and ultraviolet light. Instances of Mycobacterium bovis and Mycobacterium avium contributing to the development of TB infection are rare.
Mode of...
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Pulmonary Tuberculosis III01:31

Pulmonary Tuberculosis III

524
Tuberculosis (TB) is a contagious infection primarily affecting the lung parenchyma but which can also affect other body parts. TB can be classified based on disease development, presentation, and the affected anatomical site.
The first classification is based on the development of the disease, and it includes the following categories:
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Pulmonary Tuberculosis II01:28

Pulmonary Tuberculosis II

655
Tuberculosis, or TB, is a bacterial infectious disease caused by Mycobacterium tuberculosis. While its primary impact is on the lungs, leading to pulmonary tuberculosis, it can also affect various other organs, a condition referred to as extrapulmonary tuberculosis.
Here is a detailed explanation of its pathophysiology:
Transmission: The process begins when a person inhales droplet nuclei containing M. tuberculosis. These are typically released into the air when an individual with pulmonary or...
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Bias in Epidemiological Studies01:29

Bias in Epidemiological Studies

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Biases can arise at various stages of research, from study design and data collection to analysis and interpretation. Recognizing and addressing these biases is essential to ensure the validity and reliability of epidemiological findings.Broadly speaking, biases in epidemiology fall into three main categories: selection bias, information bias, and confounding. A more detailed description of possible biases is:  
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Related Experiment Video

Updated: Oct 18, 2025

System for Efficacy and Cytotoxicity Screening of Inhibitors Targeting Intracellular Mycobacterium tuberculosis
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Does tuberculosis screening improve individual outcomes? A systematic review.

L Telisinghe1,2, M Ruperez1, M Amofa-Sekyi2

  • 1London School of Hygiene and Tropical Medicine, London, UK.

Eclinicalmedicine
|October 4, 2021
PubMed
Summary

Tuberculosis (TB) screening shows potential for faster diagnosis and lower patient costs. However, more research is needed on patient outcomes to inform policy and practice regarding TB screening effectiveness.

Keywords:
Active case-findingCase fatalityCatastrophic costsDisease severityEconomic consequencesEnhanced case-findingIndividual effectsMortalityPatient costsScreeningTreatment outcomes

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Area of Science:

  • Public Health
  • Infectious Disease Epidemiology
  • Health Economics

Background:

  • Tuberculosis (TB) remains a significant global health challenge.
  • Effective screening strategies are crucial for early detection and management.
  • Understanding the impact of TB screening on patient outcomes and costs is vital for public health policy.

Purpose of the Study:

  • To systematically review the impact of tuberculosis (TB) screening on patient diagnosis and treatment outcomes.
  • To assess the effect of TB screening on patient costs through an economic review.
  • To synthesize evidence on the effectiveness of TB screening compared to passive case finding (PCF).

Main Methods:

  • Conducted two systematic reviews: a clinical review (1980-2020) and an economic review (2010-2020).
  • Searched multiple databases including PubMed, EMBASE, Scopus, and Cochrane Library.
  • Utilized narrative synthesis due to study heterogeneity.

Main Results:

  • Clinical review indicated TB screening led to lower smear grade and faster diagnosis compared to PCF.
  • Screening was associated with higher pre-treatment losses to follow-up but similar treatment success and case fatality rates.
  • Economic review found lower total costs and catastrophic cost prevalence among screened individuals.
  • Some studies suggested screening was associated with lower all-cause mortality, particularly in neonatal and household contact settings.

Conclusions:

  • There is a significant lack of comprehensive patient outcome data related to TB screening.
  • Prioritizing the collection and reporting of patient-centered outcome data is essential.
  • Findings suggest TB screening may reduce costs and improve diagnostic timeliness, but more robust evidence on clinical outcomes is required to inform policy and practice.